有机化学现在足以让人发疯。它给我一种原始热带森林的印象，充满了最非凡的事物，一个可怕的、无尽的丛林，人们不敢进入，因为似乎没有出路。

Man is not logical and his intellectual history is a record of mental reserves and compromises. He hangs on to what he can in his old beliefs even when he is compelled to surrender their logical basis.