Sometimes I'll start a sentence and I don't even know where it's going. I just hope I find it along the way.
质量不是目标;它是一个旅程。
——《在沪举办茶话会上的演说》(1916年7月17日)
记忆是个奇怪的东西。它的运作方式和我所想的不同。我们如此受时间束缚,受其顺序约束。
Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding.