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The art of doing mathematics consists in finding that special case which contains all the germs of generality.
智力不仅仅是推理的能力;它还包括在记忆中寻找相关材料并在需要时调动注意力的能力。
投资者的主要问题——甚至是他最大的敌人——很可能是他自己。
我们不发明任务,而是发现任务。
We begin with the hypothesis that any subject can be taught effectively in some intellectually honest form to any child at any stage of development.