It doesn't matter if you've never heard of them or if you never think of them again-- but, Titian. The famous Titian.

你们没听说过或者听完课就忘了也没关系,例如著名的提香

耶鲁公开课 - 欧洲文明课程节选

Now, how different that is than the portrait of Charles that you saw by Titian.

你们可以对比一下,这幅画和提香的查尔斯有什么不同

耶鲁公开课 - 欧洲文明课程节选