改變的秘訣是集中你的所有能力，不是摧毀舊的，而是建造新的。
The secret of change is to focus all of your energy，not on fighting the old，but on building the new.
λ演算本質(zhì)上是一個關(guān)于函數(shù)及其應(yīng)用的理論。
The only people who see the whole picture are the ones who step out of the frame.
Take long walks in stormy weather or through deep snows in the fields and woods, if you would keep your spirits up. Deal with brute nature. Be cold and hungry and weary.
Consciousness is like a river—you can never step into the same stream of thought twice.