We are all products of chance and necessity.

Psychology as the behaviorist views it is a purely objective experimental branch of natural science.

You don’t have to be perfect. Just be yourself.

对待小人态度严厉，不困难，困难的是让自己不去憎恨厌恶他们；对待君子恭敬谦逊，不困难，困难的是让自己始终以礼相待他们。