Out, out, brief candle! Life's but a walking shadow, a poor player That struts and frets his hour upon the stage And then is heard no more. It is a tale Told by an idiot, full of sound and fury, Signifying nothing, 

The function of mental processes is to mediate between the needs of the organism and the demands of the environment.

To talk about painting is not only difficult but perhaps pointless too.

无论你去哪里，你都带着自己。