But the river, though it flowed so slowly, had still a sense of movement and it gave one a melancholy feeling of the transitoriness of things.

但这河水，虽然流得那慢，却还有一种流动的感觉， 给人一种世事无常的惆怅。

How should he not know love, he, who has discovered all elements of human existence in their transitoriness, in their meaninglessness, and yet loved people thus much, to use a long, laborious life only to help them, to teach them!

会不懂得爱呢，已经发现了人类存在的所有要素的短暂，在它们的无意义中，却如此热爱人们，用漫长而艰苦的生命来帮助们，教导们！