Phaedrus

The proper study of mankind is man;

人类研究的适当对象是人类自己；

But of all the irrational desires or excesses the greatest is that which is led away by desires of a kindred nature to the enjoyment of personal beauty.

但是在所有非理性的欲望或过度行为中，最伟大的是那些被个人美色所吸引的欲望。