People who say it cannot be done should not interrupt those who are doing it.

One of the first things taught in introductory statistics textbooks is that correlation is not causation. It is also one of the first things forgotten.

The challenges in our lives are there to strengthen our convictions. They are not there to run us over.

让女性成为理性的生物和自由的公民，她们很快就会成为好妻子；——也就是说，如果男性不忽视丈夫和父亲的职责。

人类的历史就是人们低估自己的历史。

Our descendants will achieve thins that will amaze us, yet a portion of what they will create could have been made with today’s materials and tools if we had had the imagination. Think bigger.

The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion.

即使不在最佳状态，我也总是试图找到获胜的方法。