我也厌倦了。但我更厌倦对此无所作为。

Free education is abundant, all over the Internet. It's the desire to learn that's scarce.

The audience completes the artwork.

The peculiar evil of silencing the expression of an opinion is that it is robbing the human race； posterity as well as the existing generation； those who dissent from the opinion， still more than those who hold it.

每一个科学进步都迫使我们面对新的伦理问题。

The only way to get rid of a temptation is to yield to it.

人类的灵魂需要的实际的美比面包更多。