Freedom is absolutely necessary.
The true man wants two things: danger and play. For that reason he wants woman, as the most dangerous plaything.
The best way to learn mathematics is to do mathematics.
向人求助之时应该去求真正胸襟开阔的人;帮助别人时要帮助真正需要帮助的人。
Women are never disarmed by compliments. Men always are. That is the difference between sexes.
The most important thing is to be sincere in what you do. If you are sincere, the public will feel it.
我们需要从所有权转向使用权——从产品转向服务。