There is no despair so absolute as that which comes with the first moments of our first great sorrow, when we have not yet known what it is to have suffered and be healed, to have despaired and have recovered.

In chemistry, as in life, the most transformative reactions often require patience and precise conditions.

解释：使用毒性大的药物治疗疾病时，病情十成中只能去掉六成就要停药，以免伤害正气。

理性是，也应该只是激情的奴隶，永远不能假装具有其他职责，而只能用于服务和服从它们。