It is better for you to be free of fear lying upon a pallet, than to have a golden couch and a rich table and be full of trouble.
The attosecond timescale is to electron motion what the high-speed camera was to studying animal locomotion.
Love covers a multitude of sins.
The goal of behavior is always the reduction of some drive or need.
正如幾何學(xué)最自然的起點(diǎn)是數(shù)學(xué)點(diǎn)，在觀察和自然歷史中采用同樣的方法也最真實(shí)、簡單且富有教益。