书籍是人类经验的地图。

我只知道，我画画是因为我需要，我画任何经过我脑海的东西，不考虑其他。

On the path of science, there are no smooth roads to take; only those who are not afraid of hard work and climb the steep mountain paths have the hope of reaching the glorious summit.

释义：行善容易，不求善名难；不侵犯他人容易，被侵犯后不计较难。