The mathematician does not study pure mathematics because it is useful; he studies it because he delights in it and he delights in it because it is beautiful.
You have to stay true to yourself and your art.
思想掠过我的心上,如一群野鸭飞过天空。我听见它们鼓翼之声了。
译文:听取多方面的意见才能明辨是非,只听信一方面的话就会分不清是非。