穷人的真正悲剧是他们除了自我否定外什么都负担不起。
The real tragedy of the poor is that they can afford nothing but self-denial.
最好的学习方法就是实践。
预测未来的最好方法就是创造未来。
Every scientist has a responsibility to consider the broader implications of their work.
The best way to predict the future is to create it.