The mathematician's patterns, like the painter's or the poet's, must be beautiful.
Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding.
把肉扔在饿虎出没的小路上,祸患就无可挽救了。主动招惹麻烦,怎么可能平安无事。
心灵不是一个静态的实体,而是一个持续调整的动态过程。