The principles of conditioning apply equally to all species.
The human brain is a social brain, and it evolved to deal with social relationships.
The theory of probabilities is at bottom nothing but common sense reduced to calculus.
一个社会的真正考验在于它如何对待最脆弱的成员。
时间最美的地方在于你无法提前浪费它。明年,明天,下一个小时都在等待着你,它们就像你从未浪费或误用过一刹那的生活一样完美,不受玷污。如果你愿意,你可以每小时翻开一个新的一页。