我的心是旷野的鸟，在你的眼睛里找到了天空。
You have to believe in yourself when no one else does.
数学的美在于它让我们无需离开椅子就能探索宇宙。
It seems to me that if you or I must choose between two courses of thought or action, we should remember our dying and try so to live that our death brings no pleasure to the world.
