I've learned that you can't control everything, and sometimes you just have to let go.

What we know is not much. What we do not know is immense.

The capacity of the human mind for forming and manipulating symbols is what sets us apart from other animals.

孩子最初爱他们父母，等大一些他们评判父母；然后有些时候，他们原谅父母。

Philosophy is not a doctrine but an activity.