The most dangerous strategy is to jump a chasm in two leaps.
When I got tired, I slept. When I got hungry, I ate. When I had to go, you know, I went.
人不是环境的产物;相反,环境允许或刺激他的发展。
The press is the best instrument for enlightening the mind of man, and improving him as a rational, moral and social being.
Be slow to fall into friendship,but when you are in,continue firm and constant.
化学的艺术在于分离、识别和量化不同物质的能力。