diff --git a/src/object.c b/src/object.c
index 9bbbcbe..1924b10 100644
--- a/src/object.c
+++ b/src/object.c
@@ -361,20 +361,36 @@ void deleteList(Object *dest)
     dest->list = NULL;
 }
 
+void _copyList(Object *dest, const Object *src, int delete) {
+    if(!dest || !src) {
+        printd("NULL\n");
+        return;
+    }
+    if(dest->type != TYPE_LIST || src->type != TYPE_LIST) {
+        printd("NOT A LIST\n");
+        return;
+    }
+
+    if(delete)
+        deleteList(dest);
+
+    FOR_POINTER_IN_LIST(src) {
+        debugObj(POINTER);
+        nf_addToList(dest, *POINTER);
+        if(POINTER->type == TYPE_LIST) {
+            tail(dest)->list = NULL;
+            _copyList(tail(dest), POINTER, 0);
+        }
+    }
+}
 /**
- * Copies all items from `src` to `dest`
+ * Does a deep copy of all items from `src` to `dest`
  * Does nothing if either is NULL, or not a list type
  * Deletes all items from `dest` before copying
  */
 void copyList(Object *dest, const Object *src)
 {
-    if(!dest || !src || dest->type != TYPE_LIST || src->type != TYPE_LIST)
-        return;
-
-    deleteList(dest);
-    FOR_POINTER_IN_LIST(src) {
-        nf_addToList(dest, *POINTER);
-    }
+    _copyList(dest, src, 1);
 }
 
 // Returns a basic object with NULL forward and the given `type`
diff --git a/src/pebblisp.c b/src/pebblisp.c
index a35e172..c87852a 100644
--- a/src/pebblisp.c
+++ b/src/pebblisp.c
@@ -37,10 +37,10 @@ Object fetchFromEnvironment(const char *name, struct Environment *env)
     if(env->size == 0)
         return errorObject(EMPTY_ENV);
 
-    printf("Fetching '%s' from env\n", name);
+    printd("Fetching '%s' from env\n", name);
     // printEnv(env);
     for(int i = 0; i < env->size; i++) {
-        printf("Try %d\n", i);
+        printd("Try %d\n", i);
         if(env->strings[i] == NULL)
             break;
         if(strcmp(name, env->strings[i]) == 0) {
@@ -48,9 +48,9 @@ Object fetchFromEnvironment(const char *name, struct Environment *env)
         }
     }
 
-    printf("Trying outer %p\n", env->outer);
+    printd("Trying outer %p\n", env->outer);
     if(env->outer) {
-        printEnv(env->outer);
+        // printEnv(env->outer);
         return fetchFromEnvironment(name, env->outer);
     }
 
@@ -200,12 +200,12 @@ struct Environment envForLambda(const Object *params, const Object *arg_forms,
     env.objects = malloc(sizeof(Object) * paramCount + 1);
 
     const Object *march = arg_forms;
-    printf("Param count: %d\n", paramCount);
+    printd("Param count: %d\n", paramCount);
     for(int i = 0; i < paramCount; i++) {
         const char *newObjName = itemAt(params, i)->name;
         const Object newEnvObj = eval(march, outer);
-        printf("Adding new object '%s' to lambda env: ", newObjName);
-        printObj(&newEnvObj);
+        printd("Adding new object '%s' to lambda env: ", newObjName);
+        debugObj(&newEnvObj);
         addToEnv(&env, newObjName, newEnvObj); // Could use eval_forms?
         march = march->forward;
     }
@@ -238,8 +238,6 @@ void eval_forms(Object *destList, const Object *src, struct Environment *env)
     }
 }
 
-static int depth = 0;
-
 Object eval(const Object *obj, struct Environment *env)
 {
     printd("eval():\n");
@@ -250,13 +248,7 @@ Object eval(const Object *obj, struct Environment *env)
             return *obj; // Return as is
 
         case TYPE_SYMBOL:
-        {
-            depth++;
-            printf("depth: %d\n", depth);
-            const Object oi = fetchFromEnvironment(obj->name, env);
-            depth--;
-            return oi;
-        }
+            return fetchFromEnvironment(obj->name, env);
 
         case TYPE_LIST:
         {
@@ -295,7 +287,7 @@ Object eval(const Object *obj, struct Environment *env)
                 struct Environment newEnv = 
                         envForLambda(&first_eval.lambda->params, first_form->forward, env);
                 Object ret = eval(&first_eval.lambda->body, &newEnv);
-                printEnv(&newEnv);
+                //printEnv(&newEnv);
                 deleteEnv(&newEnv);
                 return ret;
 
@@ -452,6 +444,8 @@ struct Environment defaultEnv() {
     addFunc(">", &gth, &e);
     addFunc("<", &lth, &e);
     addFunc("len", &len, &e);
+    parseEval("(def max (fn (a b) (if (> a b) a b)))", &e);
+    parseEval("(def min (fn (a b) (if (< a b) a b)))", &e);
 
     return e;
 }
@@ -489,7 +483,7 @@ int repl(struct Environment *env)
         Object obj = parseEval(input, env);
         // printAndClean(&obj);
         printObj(&obj);
-        // printEnv(env);
+        //printEnv(env);
     }
 }