I earnestly wish to point out in what true dignity and human happiness consists.
想让小孩子在旅行中表现良好,可以准备一袋他们喜欢的糖果,当他/她不乖时,就向窗外扔掉一块糖。
我们用数学来理解市场,而不是预测市场。
The best way to predict your future is to create it.