Comment by wgjordan

Likely apocryphal [1], possibly inspired by a true story from 1878 about a court case involving well-known painter James McNeill Whistler [2]:

> "Oh, two days! The labour of two days, then, is that for which you ask two hundred guineas!"

> "No;-I ask it for the knowledge of a lifetime."

[1] https://quoteinvestigator.com/2018/01/14/time-art/

[2] https://quoteinvestigator.com/2018/01/12/lifetime/