The best performance improvement is the transition from the non-working state to the working state.

There is no man, however wise, who has not at some period of his youth said things, or lived in a way the consciousness of which is so unpleasant to him in later life that he would gladly, if he could, expunge it from his memory.

成为人类就是在世界中存在，而在世界中存在就是在时间中存在。