勇敢的人可能不会永远活着,但谨慎的人根本就没活过。
The brave may not live forever, but the cautious do not live at all.
Mental processes are the living organism's survival toolkit.
It is so hard to believe because it is so hard to obey.
The desire to get rich is a natural human instinct, and it's not something to be ashamed of.
The challenge of art is to make the invisible visible.