The choice for mankind lies between freedom and happiness and for the great bulk of mankind, happiness is better.
我是一个喜欢在前面的人。
当今的科学家们思考得很深,而不是很清晰。一个人必须头脑清醒才能清晰地思考,但一个人可以思考得很深却相当疯狂。
The personal example of a teacher is the most useful sunshine that nothing can replace for the soul of young people.