The existence of the natural world is the same kind of fact as the existence of any proposition.
自然界的存在与任何命题的存在是同一类型的事实。
Gratitude is an antidote to negative emotions, a neutralizer of envy, hostility, worry, and irritation.
Education’s rewards are too distant when today’s survival is urgent.
书籍是人类灵魂的镜子，它们反映出我们最深层的恐惧和希望。