The only thing that can make you powerful is your own soul.

The work is always changing.

You can’t change the people around you, but you can change the people you choose to be around.

The natural effort of every individual to better his own condition， when suffered to exert itself with freedom and security， is so powerful a principle that it is alone， and without any assistance， not only capable of carrying on the society to wealth and prosperity but of surmounting a hundred impertinent obstructions with which the folly of human laws too often encumbers its operations.

真相伤人，但谎言更伤人。

The more you speak, the more likely you are to say something foolish.

The book is a weapon against oblivion.