There is no absolute security, only relative risk control.
没有绝对的安全，只有相对的风险控制。
知足者最富有，因为知足是自然的财富。
The more I study nature, the more I stand amazed at the work of the Creator.
The people who are crazy enough to think they can change the world are the ones who do.
"The stories we tell about animals say more about us than they do about them."
The world is not run from where he thinks. Not from castle walls, but from countinghouses, not by the call of the bugle but by the click of the abacus, not by the grate and click of the broadsword but by the scrape of the pen.