Nature has placed mankind under the governance of two sovereign masters, pain and pleasure.
To love beauty is to see light.
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.
你为某事付出的努力越多,当你实现它时感觉就越好。
能在别人的快乐中找到快乐:这是幸福的秘诀。