John Singer Sargent — American Artist born on January 12, 1856, died on April 14, 1925

John Singer Sargent was an American artist, considered the "leading portrait painter of his generation" for his evocations of Edwardian era luxury. During his career, he created roughly 900 oil paintings and more than 2,000 watercolors, as well as countless sketches and charcoal drawings. His oeuvre documents worldwide travel, from Venice to the Tyrol, Corfu, the Middle East, Montana, Maine, and Florida... (wikipedia)

I do not judge, I only chronicle.
You can't do sketches enough. Sketch everything and keep your curiosity fresh.
'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).
Every time I paint a portrait I lose a friend.
A person with normal eyesight would have nothing to know in the way of 'Impressionism' unless he were in a blinding light or in the dusk or dark.