I went to the woods because I wanted to live deliberately. I wanted to live deep and suck out all the marrow of life. To put to rout all that was not life. And not, when I had come to die, discover that I had not lived.

君子像水，性情谦虚冲淡，本质洁白，味平淡。而它的用处，可以使不洁的东西成为清洁，即使在滚烫的热水中放入油，二者亦不会混合，这就是君子的本性。小人像油，本质滑腻，味浓厚，它的用途可污染清洁之物，若在滚烫的油中放入水，二者必然相激而不相容， 这就是小人的本质。

Stay true to yourself and never let anyone change you.

The only way to learn mathematics is to do mathematics.

The past is not just the past, but a prism through which the subject filters his own changing self-image.

总的来说，治理的艺术在于从一类公民那里尽可能多地拿走钱，然后分给另一类公民。

A child educated only at school is an uneducated child.