要理解知觉，研究其在适应中的作用。
"To understand perception, study its role in adaptation."
追求幸福并不自私——它对于有意义的生活至关重要。
总的来说，金融体系从社会中减去价值。
"The great advantage of being a writer is that you can spy on people. You're there, listening to every word, but part of you is observing. Everything is useful to a writer, every scrap, even the longest and most boring of luncheon parties."
重要的不是你对了还是错了，而是当你对了的时候你赚了多少钱，当你错了的时候你亏了多少钱。
——《在东京中国留学生欢迎大会的演说》（1905年8月13日）
A miner's skill and dedication are just as valuable as the coal they bring to the surface.
无畏并非毫无畏惧。它不是完全不害怕，而是心怀诸多恐惧却依然勇往直前。