To understand the mind, we must first understand its evolutionary purpose.
绥靖主义者是在喂鳄鱼----可最后鳄鱼也把他给吃了。
理论与实验之间的合作对于物理学的进步至关重要。
Fear is the main source of superstition, and one of the main sources of cruelty. To conquer fear is the beginning of wisdom, in the pursuit of truth as in the endeavour after a worthy manner of life.