diff --git a/lib/base.tri b/lib/base.tri
new file mode 100644
index 0000000..7b69554
--- /dev/null
+++ b/lib/base.tri
@@ -0,0 +1,35 @@
+false = t
+_ = t
+true = t t
+k = t t
+i = t (t k) t
+s = t (t (k t)) t
+m = s i i
+b = s (k s) k
+c = s (s (k s) (s (k k) s)) (k k)
+iC = (\a b c : s a (k c) b)
+iD = b (b iC) iC
+iE = b (b iD) iC
+yi = (\i : b m (c b (i m)))
+y = yi iC
+yC = yi iD
+yD = yi iE
+id = (\a : a)
+triage = (\a b c : t (t a b) c)
+pair = t
+matchBool = (\ot of : triage of (\_ : ot) (\_ _ : ot))
+matchList = (\oe oc : triage oe _ oc)
+matchPair = (\op : triage _ _ op)
+not = matchBool false true
+and = matchBool id (\z : false)
+if = (\cond then else : t (t else (t t then)) t cond)
+test = triage "Leaf" (\z : "Stem") (\a b : "Fork")
+emptyList = matchList true (\y z : false)
+head = matchList t (\hd tl : hd)
+tail = matchList t (\hd tl : tl)
+lconcat = y (\self : matchList (\k : k) (\h r k : pair h (self r k)))
+lAnd = triage (\x : false) (\_ x : x) (\_ _ x : x)
+lOr = triage (\x : x) (\_ _ : true) (\_ _ x : true)
+hmap = y (\self : matchList (\f : t) (\hd tl f : pair (f hd) (self tl f)))
+map = (\f l : hmap l f)
+equal = y (\self : triage (triage true (\z : false) (\y z : false)) (\ax : triage false (self ax) (\y z : false)) (\ax ay : triage false (\z : false) (\bx by : lAnd (self ax bx) (self ay by))))
diff --git a/src/FileEval.hs b/src/FileEval.hs
index b33e3e5..040de83 100644
--- a/src/FileEval.hs
+++ b/src/FileEval.hs
@@ -1,7 +1,6 @@
 module FileEval where
 
 import Eval
-import Library
 import Parser
 import Research
 
@@ -9,17 +8,23 @@ import System.IO
 
 import qualified Data.Map as Map
 
-evaluateFile :: FilePath -> IO T
-evaluateFile filePath = do
+evaluateFileResult :: FilePath -> IO T
+evaluateFileResult filePath = do
   contents <- readFile filePath
   let asts = parseTricu contents
-  let finalEnv = evalTricu library asts
+  let finalEnv = evalTricu Map.empty asts
   case Map.lookup "__result" finalEnv of
     Just finalResult -> return finalResult
     Nothing -> error "No result found in final environment"
 
-evaluateFileEnv :: FilePath -> IO Env
-evaluateFileEnv filePath = do
+evaluateFile :: FilePath -> IO Env
+evaluateFile filePath = do
   contents <- readFile filePath
   let asts = parseTricu contents
-  pure $ evalTricu library asts
+  pure $ evalTricu Map.empty asts
+
+evaluateFileWithContext :: Env -> FilePath -> IO Env
+evaluateFileWithContext env filePath = do
+  contents <- readFile filePath
+  let asts = parseTricu contents
+  pure $ evalTricu env asts
diff --git a/src/Library.hs b/src/Library.hs
deleted file mode 100644
index 5db2793..0000000
--- a/src/Library.hs
+++ /dev/null
@@ -1,46 +0,0 @@
-module Library where
-
-import Eval
-import Parser
-import Research
-
-import Data.Map (empty)
-
-library :: Env
-library = evalTricu empty $ parseTricu $ unlines
-  [ "false = t" 
-  , "true = t t"
-  , "_ = t"
-  , "k = t t"
-  , "i = t (t k) t"
-  , "s = t (t (k t)) t"
-  , "m = s i i"
-  , "b = s (k s) k"
-  , "c = s (s (k s) (s (k k) s)) (k k)"
-  , "iC = (\\a b c : s a (k c) b)"
-  , "iD = b (b iC) iC"
-  , "iE = b (b iD) iC"
-  , "yi = (\\i : b m (c b (i m)))"
-  , "y = yi iC"
-  , "yC = yi iD"
-  , "yD = yi iE"
-  , "id = (\\a : a)"
-  , "triage = (\\a b c : t (t a b) c)"
-  , "pair = t"
-  , "matchBool = (\\ot of : triage of (\\_ : ot) (\\_ _ : ot))"
-  , "matchList = (\\oe oc : triage oe _ oc)"
-  , "matchPair = (\\op : triage _ _ op)"
-  , "not = matchBool false true"
-  , "and = matchBool id (\\z : false)"
-  , "if = (\\cond then else : t (t else (t t then)) t cond)"
-  , "test = triage \"Leaf\" (\\z : \"Stem\") (\\a b : \"Fork\")"
-  , "emptyList = matchList true (\\y z : false)"
-  , "head = matchList t (\\hd tl : hd)"
-  , "tail = matchList t (\\hd tl : tl)"
-  , "lconcat = y (\\self : matchList (\\k : k) (\\h r k : pair h (self r k)))"
-  , "lAnd = triage (\\x : false) (\\_ x : x) (\\_ _ x : x)"
-  , "lOr = triage (\\x : x) (\\_ _ : true) (\\_ _ x : true)"
-  , "hmap = y (\\self : matchList (\\f : t) (\\hd tl f : pair (f hd) (self tl f)))"
-  , "map = (\\f l : hmap l f)"
-  , "equal = y (\\self : triage (triage true (\\z : false) (\\y z : false)) (\\ax : triage false (self ax) (\\y z : false)) (\\ax ay : triage false (\\z : false) (\\bx by : lAnd (self ax bx) (self ay by))))" 
-  ]
diff --git a/src/Main.hs b/src/Main.hs
index 1ae9a84..c937822 100644
--- a/src/Main.hs
+++ b/src/Main.hs
@@ -2,11 +2,11 @@ module Main where
 
 import Eval                   (evalTricu, result)
 import FileEval
-import Library                (library)
 import Parser                 (parseTricu)
 import REPL
 import Research
 
+import Control.Monad.IO.Class (liftIO)
 import Text.Megaparsec        (runParser)
 import System.Console.CmdArgs
 
@@ -68,10 +68,11 @@ main = do
     Repl -> do
       putStrLn "Welcome to the tricu REPL"
       putStrLn "You can exit with `CTRL+D` or the `:_exit` command.`"
+      library <- liftIO $ evaluateFile "./lib/base.tri"
       repl library
     Evaluate { file = maybeFilePath, output = maybeOutputPath, form = form } -> do
       result <- case maybeFilePath of
-        Just filePath -> evaluateFile filePath
+        Just filePath -> evaluateFileResult filePath
         Nothing -> do 
           t <- getContents
           pure $ runTricu t
@@ -85,6 +86,7 @@ main = do
       value <- case maybeFilePath of
         Just filePath -> readFile filePath
         Nothing -> getContents
+      library <- liftIO $ evaluateFile "./lib/base.tri"
       putStrLn $ decodeResult $ result $ evalTricu library $ parseTricu value
 
 runTricu :: String -> T
diff --git a/src/REPL.hs b/src/REPL.hs
index 655dc64..333fafc 100644
--- a/src/REPL.hs
+++ b/src/REPL.hs
@@ -29,7 +29,7 @@ repl env = runInputT defaultSettings (loop env)
               outputStrLn "No input received; stopping import."
               loop env
             Just path -> do
-              loadedEnv <- liftIO $ evaluateFileEnv path
+              loadedEnv <- liftIO $ evaluateFile path
               loop $ Map.union loadedEnv env
         Just "" -> do
           outputStrLn ""
diff --git a/test/Spec.hs b/test/Spec.hs
index cdcdff3..6702862 100644
--- a/test/Spec.hs
+++ b/test/Spec.hs
@@ -3,7 +3,6 @@ module Main where
 import Eval
 import FileEval
 import Lexer
-import Library
 import Parser
 import REPL
 import Research
@@ -288,90 +287,112 @@ lambdaEvalTests = testGroup "Lambda Evaluation Tests"
 libraryTests :: TestTree
 libraryTests = testGroup "Library Tests"
   [ testCase "K combinator 1" $ do
+      library <- evaluateFile "./lib/base.tri"
       let input = "k (t) (t t)"
           env = evalTricu library (parseTricu input)
       result env @?= Leaf
   , testCase "K combinator 2" $ do
+      library <- evaluateFile "./lib/base.tri"
       let input = "k (t t) (t)"
           env = evalTricu library (parseTricu input)
       result env @?= Stem Leaf
   , testCase "K combinator 3" $ do
+      library <- evaluateFile "./lib/base.tri"
       let input = "k (t t t) (t)"
           env = evalTricu library (parseTricu input)
       result env @?= Fork Leaf Leaf
   , testCase "S combinator" $ do
+      library <- evaluateFile "./lib/base.tri"
       let input = "s (t) (t) (t)"
           env = evalTricu library (parseTricu input)
       result env @?= Fork Leaf (Stem Leaf)
   , testCase "SKK == I (fully expanded)" $ do
+      library <- evaluateFile "./lib/base.tri"
       let input = "s k k"
           env = evalTricu library (parseTricu input)
       result env @?= Fork (Stem (Stem Leaf)) (Stem Leaf)
   , testCase "I combinator" $ do
+      library <- evaluateFile "./lib/base.tri"
       let input = "i not"
           env = evalTricu library (parseTricu input)
       result env @?= Fork (Fork (Stem Leaf) (Fork Leaf Leaf)) (Fork Leaf (Fork Leaf Leaf))
   , testCase "Triage test Leaf" $ do
+      library <- evaluateFile "./lib/base.tri"
       let input = "test t"
           env = decodeResult $ result $ evalTricu library (parseTricu input)
       env @?= "Leaf"
   , testCase "Triage test (Stem Leaf)" $ do
+      library <- evaluateFile "./lib/base.tri"
       let input = "test (t t)"
           env = decodeResult $ result $ evalTricu library (parseTricu input)
       env @?= "Stem"
   , testCase "Triage test (Fork Leaf Leaf)" $ do
+      library <- evaluateFile "./lib/base.tri"
       let input = "test (t t t)"
           env = decodeResult $ result $ evalTricu library (parseTricu input)
       env @?= "Fork"
   , testCase "Boolean NOT: true" $ do
+      library <- evaluateFile "./lib/base.tri"
       let input = "not true"
           env = result $ evalTricu library (parseTricu input)
       env @?= Leaf
   , testCase "Boolean NOT: false" $ do
+      library <- evaluateFile "./lib/base.tri"
       let input = "not false"
           env = result $ evalTricu library (parseTricu input)
       env @?= Stem Leaf
   , testCase "Boolean AND TF" $ do
+      library <- evaluateFile "./lib/base.tri"
       let input = "and (t t) (t)"
           env = evalTricu library (parseTricu input)
       result env @?= Leaf
   , testCase "Boolean AND FT" $ do
+      library <- evaluateFile "./lib/base.tri"
       let input = "and (t) (t t)"
           env = evalTricu library (parseTricu input)
       result env @?= Leaf
   , testCase "Boolean AND FF" $ do
+      library <- evaluateFile "./lib/base.tri"
       let input = "and (t) (t)"
           env = evalTricu library (parseTricu input)
       result env @?= Leaf
   , testCase "Boolean AND TT" $ do
+      library <- evaluateFile "./lib/base.tri"
       let input = "and (t t) (t t)"
           env = evalTricu library (parseTricu input)
       result env @?= Stem Leaf
   , testCase "List head" $ do
+      library <- evaluateFile "./lib/base.tri"
       let input = "head [(t) (t t) (t t t)]"
           env = evalTricu library (parseTricu input)
       result env @?= Leaf
   , testCase "List tail" $ do
+      library <- evaluateFile "./lib/base.tri"
       let input = "head (tail (tail [(t) (t t) (t t t)]))"
           env = evalTricu library (parseTricu input)
       result env @?= Fork Leaf Leaf
   , testCase "List map" $ do
+      library <- evaluateFile "./lib/base.tri"
       let input = "head (tail (map (\\a : (t t t)) [(t) (t) (t)]))"
           env = evalTricu library (parseTricu input)
       result env @?= Fork Leaf Leaf
   , testCase "Empty list check" $ do
+      library <- evaluateFile "./lib/base.tri"
       let input = "emptyList []"
           env = evalTricu library (parseTricu input)
       result env @?= Stem Leaf
   , testCase "Non-empty list check" $ do
+      library <- evaluateFile "./lib/base.tri"
       let input = "not (emptyList [(1) (2) (3)])"
           env = evalTricu library (parseTricu input)
       result env @?= Stem Leaf
   , testCase "Concatenate strings" $ do
+      library <- evaluateFile "./lib/base.tri"
       let input = "lconcat \"Hello, \" \"world!\""
           env = decodeResult $ result $ evalTricu library (parseTricu input)
       env @?= "Hello, world!"
   , testCase "Verifying Equality" $ do
+      library <- evaluateFile "./lib/base.tri"
       let input = "equal (t t t) (t t t)"
           env = evalTricu library (parseTricu input)
       result env @?= Stem Leaf
@@ -380,17 +401,18 @@ libraryTests = testGroup "Library Tests"
 fileEvaluationTests :: TestTree
 fileEvaluationTests = testGroup "Evaluation tests"
   [ testCase "Forks" $ do
-      res <- liftIO $ evaluateFile "./test/fork.tri"
+      res <- liftIO $ evaluateFileResult "./test/fork.tri"
       res @?= Fork Leaf Leaf
   , testCase "File ends with comment" $ do
-      res <- liftIO $ evaluateFile "./test/comments-1.tri"
+      res <- liftIO $ evaluateFileResult "./test/comments-1.tri"
       res @?= Fork (Stem Leaf) Leaf
   , testCase "Mapping and Equality" $ do
-      res <- liftIO $ evaluateFile "./test/map.tri"
+      res <- liftIO $ evaluateFileResult "./test/map.tri"
       res @?= Stem Leaf
   , testCase "Eval and decoding string" $ do
-      res <- liftIO $ evaluateFile "./test/string.tri"
-      decodeResult res @?= "String test!"
+      library <- liftIO $ evaluateFile "./lib/base.tri"
+      res <- liftIO $ evaluateFileWithContext library "./test/string.tri"
+      decodeResult (result res) @?= "String test!"
   ]
 
 propertyTests :: TestTree
diff --git a/tricu.cabal b/tricu.cabal
index 8c1e7c9..647fd78 100644
--- a/tricu.cabal
+++ b/tricu.cabal
@@ -32,7 +32,6 @@ executable tricu
     Eval
     FileEval
     Lexer
-    Library
     Parser
     REPL
     Research
@@ -61,7 +60,6 @@ test-suite tricu-tests
     Eval
     FileEval
     Lexer
-    Library
     Parser
     REPL
     Research