The concept of probably approximately correct (PAC) learning has been foundational in computational learning theory.

The best way to debug a program is to make it work.

Art is the closest thing we have to magic.

Time is a concept that is derived from the way we perceive change.

Don’t take it personally when someone turns you down. Assume they are like you: busy， occupied， distracted. Try again later. It’s amazing how often a second try works.

爱是统一和凝聚的原则，争斗是分离和崩解的力量。

我们都是自己故事中的英雄。

绘本中的沉默与图像和文字同样重要。