"We are all searching for something, but sometimes what we are searching for is already within us."

It is the preoccupation with possessions， more than anything else， that prevents us from living freely and nobly.

The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion.

科学是通过证据追求真理。

领导力在于引导他人看到他们所做事情的价值。