The hardest part of any challenge is taking the first step.
嗅觉系统是大脑如何从环境中解码复杂信息的一个显著例子。
A society that puts equality before freedom will get neither. A society that puts freedom before equality will get a high degree of both.
I don't regret the things I've done, I regret the things I didn't do when I had the chance.