心理学家必须避免一切形式的心理化学。
作家必须甘于被挑战。
I was born with an enormous need for affection, and a terrible need to give it.
Every experiment, whether successful or not, teaches us something valuable.
数学的统一性不是幻觉,而是等待被揭示的现实。
林肯的政敌批评林肯有“两面三刀”时的幽默回应。因为就政治人物而言,林肯的长相极不讨喜,像个野猴