The world might be mean, but people don't have to be.

The only way of discovering the limits of the possible is to venture a little way past them into the impossible.

Courage is the most important of all the virtues, because without courage you can't practice any other virtue consistently.

The greatest tragedy in mankind's entire history may be the hijacking of morality by religion.

编辑基因的力量伴随着巨大的伦理责任。