Lisp is worth learning for the profound enlightenment experience you will have when you finally get it; that experience will make you a better programmer for the rest of your days, even if you never actually use Lisp itself a lot.

And America, too, is a delusion, the grandest one of all. The white race believes—believes with all its heart—that it is their right to take the land. To kill Indians. Make war. Enslave their brothers. This nation shouldn’t exist, if there is any justice in the world, for its foundations are murder, theft, and cruelty.

The more you read, the more things you will know. The more that you learn, the more places you'll go.

The true joy of mathematics lies in the act of discovery, not just the result.