The human brain is a product of evolution, and so is the human mind.

Psychology is a science, and teaching is an art; and sciences never generate arts directly out of themselves.

真正的科学家不仅要有追求真理的热情，还要有面对未知的勇气。

The best investments are often the ones that are the most unpopular.

History is that certainty produced at the point where the imperfections of memory meet the inadequacies of documentation.

如果你的优先事项超过三个，那么你就没有任何优先事项。