预测蓬勃发展的积极情绪与消极情绪的比例约为3比1。高于这个比例，人们往往会蓬勃发展；低于这个比例，人们往往会萎靡不振。
It is a curious subject of observation and inquiry, whether hatred and love be not the same thing at bottom.
不想当个美国白痴。
"We always overestimate the change that will occur in the next two years and underestimate the change that will occur in the next ten. Don't let yourself be lulled into inaction."
在数学中，真理不是通过共识而是通过证明来发现的。
The purpose of literature is to turn blood into ink.