Claude Monet
Claude Monet (14 November 18405 December 1926) was a founder of French impressionist
Impressionism was a 19th-century art movement that originated with a group of Paris-based artists whose independent exhibitions brought them to prominence during the 1870s and 1880s...

 painting, and the most consistent and prolific practitioner of the movement's philosophy of expressing one's perceptions before nature, especially as applied to plein-air landscape painting.of Claude Monet .

Color is my day-long obsession, joy and torment. To such an extent indeed that one day, finding myself at the deathbed of a woman who had been and still was very dear to me, I caught myself in the act of focusing on her temples and automatically analyzing the succession of appropriately graded colors which death was imposing on her motionless face.

As quoted in Claude Monet: Les Nymphéas (1926) by Georges Clemenceau, Ch. 2.

I can no longer work outside because of the intensity of the light.

In the summer of 1920 to Gustave Geffroy. Monet in the 20th Century, by Paul Hayes Tucker.

I see less and less....I need to avoid lateral light, which darkens my colors. Nevertheless, I always paint at the times of day most propitious for me, as long as my paint tubes and brushes are not mixed up....I will paint almost blind, as Beethoven composed completely deaf.

January 1921 to journalist Marcel Pays. Monet in the 20th Century, by Paul Hayes Tucker.