Organic chemistry just now appears to me like a primeval tropical forest, full of the most remarkable things, a dreadful endless jungle into which one does not dare enter, for there seems to be no way out.
有机化学现在在我看来就像一片原始热带森林，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。
What is freedom of expression? Without the freedom to offend, it ceases to exist.
监狱生活充满了一段又一段的例行公事。
The truth is, we are all capable of turning our backs on the truth.
——《北上宣言》，1924年11月