唯一真正的财富是灵魂的财富。

The future of sustainable chemistry lies in developing catalysts that work under mild conditions.

Man is always something more than what he knows of himself. He is not what he is simply once and for all, but is a process.

教学的艺术不在于传授本领，而在于激励、唤醒和鼓舞。

有时候，最难的事情和正确的事情是同一件事。