Mathematics is not a deductive science—that's a cliché. When you try to prove a theorem, you don't just list the hypotheses and then start to reason. What you do is trial and error, experimentation, guesswork.

Mathematics is a universal language that transcends cultural and linguistic barriers.

沉默是如此精确。

过去总是与我们同在，塑造着我们的现在和未来。