我只和自己竞争，不和别人竞争。

The artist must be free, even from himself.

The whole problem with the world is that fools and fanatics are always so certain of themselves， and wiser people so full of doubts.

艺术家必须先创造火花才能生火，在艺术诞生之前，艺术家必须准备好被自己创造的火所吞噬。