The most dangerous poison is the feeling of achievement. The antidote is to think every morning, 'What can be done better?'
地理学是研究地球作为人类家园的科学。
建造和创造之间的区别在于:建造的东西只能在完成后被爱,而创造的东西在存在之前就被爱了。
These are the times that try men's souls.