避免痛苦的唯一方法就是不要有足够的闲暇去思考你是否快乐。
The streets were dark with something more than night.
有两种可能的结果:如果结果证实了假设,那么你做了一个测量。如果结果与假设相反,那么你有了一个发现。
There is a close connection between the human soul and the natural world; our emotions are intertwined with the external universe.
The true value of a forest cannot be measured in board feet alone.