无物可自虚空而生。
To every action there is always opposed an equal reaction； or， the mutual actions of two bodies upon each other are always equal， and directed to contrary parts.
唯一真正的发现之旅不在于寻找新的风景，而在于拥有新的眼光。
The world is all the richer for having a devil in it, so long as we keep our foot upon his neck.
The greatest gift you can give yourself is self-love.