造纸业有着丰富的历史,但我们必须始终向前看。
The most perfect education, in my opinion, is such an exercise of the understanding as is best calculated to strengthen the body and form the heart.
在科学中,我们必须接受我们最珍视的理论可能是错误的这种可能性。
哲学的任务是使世界更加人性化。