牛痘可以保护人体免受天花的感染。

金钱的匮乏是所有罪恶的根源。

Success is a lousy teacher. It seduces smart people into thinking they can't lose.

You miss 100% of the shots you don’t take.

There is no greater sorrow than to recall happiness in times of misery.

生活的全部秘诀在于对一件事深感兴趣，对一千件事都感兴趣。

在科学中，重要的不是获得新的事实，而是发现思考它们的新方法。