When you have a good crop, the farmer is happy, his wife is happy, the children are happy, the animals are happy, and the land is happy.

心理学家必须是一个严格的实证主义者。

The great use of life is to spend it for something that will outlast it.

Sustainability isn't an option; it's our responsibility to future generations.

译文：凡是说祸福，是靠自己求来的，就是圣贤之言。若是说祸福，是靠上天决定的，就是庸俗之言。

数学中最深刻的问题往往源于最简单的问题。

科学教会我们谦卑，因为每一次发现都揭示了我们无知之广。