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The melancholy science from which I make this offering to my friend relates to a region that from time immemorial was regarded as the true field of philosophy, but which, since the latter's conversion into method, has lapsed into intellectual neglect, sententious whimsy, and finally oblivion.

I don't follow the path. I create it.

The only limit to our understanding of the universe is our imagination.

在數學中，旅程和目的地同樣重要，因為正是通過發現的過程，我們才能真正學習。

材料有自己的智慧。