"Mental processes are tools for solving life's problems."
译文：鸟的羽毛尚未丰满，就不能展翅高飞。
我们都是由我们所失去的和所获得的东西共同塑造的。
Memory is a tricky thing; it can be both a comfort and a curse.
The only way to do great work is to love what you do.
The strength of a habit is proportional to the amount of reinforcement.
对所有生物的爱，是人类最高贵的品质。