John Singer Sargent Quote

Impressionism was the name given to a certain form of observation when Monet, not content with using his eyes to see what things were or what they looked like as everybody had done before him, turned his attention to noting what took place on his own retina (as an oculist would test his own vision).

In K.C. Charteris John Sargent, C. Scribener's Sons, p.123