原文英文:The oldest and strongest emotion of mankind is fear, and the oldest and strongest kind of fear is fear of the unknown.
人类最古老而强烈的情绪,便是恐惧;而最古老最强烈的恐惧,便是对未知的恐惧。
To understand behavior, we must look at its purpose in the context of survival and adaptation.
数学不是一项观赏性运动。
你必须站起来说:"我和我的身材或我是谁都没有问题,有问题的是你!"