In the realm of quantum mechanics, the observer and the observed are inextricably linked, challenging our classical notions of reality.

"Every book should be a conversation between the author and the reader."

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.

You’ll get 10x better results by elevating good behavior rather than punishing bad behavior， especially in children and animals.

孔子在河边说：“时光如流水！日夜不停留。”