Poverty is not just a lack of money; it is the absence of viable choices.

最强大的人是能够承认自己弱点的人。

I don't write plays to be liked. I write plays to make people think.

Don't be afraid of failure, be afraid that you don't even dare to try.

The truth is, the science of Nature has been already too long made only a work of the brain and the fancy: It is now high time that it should return to the plainness and soundness of observations on material and obvious things.