当你创新时，你必须准备好每个人都说你疯了。

The rules of art are not arbitrary; they are founded in reason and in the nature of things.

对于世界而言，你是一个人；但是对于某个人，你是他的整个世界。

The value of a commodity, or the quantity of any other commodity for which it will exchange, depends on the relative quantity of labor which is necessary for its production, and not on the greater or less compensation which is paid for that labor.

我不缺乏把一个想法彻底思考下去的勇气，到目前为止，我还没有遇到过我害怕的想法。