The highest manifestation of life consists in this: that a being governs its own actions. A thing which is always subject to the direction of another is somewhat of a dead thing.
Death is the only truly serious philosophical problem.
种树的最佳时间是20年前。第二好的时间就是现在。
True happiness arises, in the first place, from the enjoyment of one's self, and in the next, from the friendship and conversation of a few select companions.