思想掠过我的心上，如一群野鹘飞过天空。我听见它们鼓翼之声了。

You must change nothing in your writing without absolute necessity. If it is necessary， then change with simplicity.

解释：冬天不洗冰水，并不是吝惜冰；夏天不烤火，也不是舍不得火。而是因为这样做对身体不适宜。

战争是黑暗的，但有时它是我们唯一的光。

A picture must be grasped at once, as a whole, like a piece of music or a poem.