This is an interesting desktop wallpaper. I couldn't find out for certain who designed it but it was an idea posted on the Kitsune Noir Desktop Wallpaper Project. The man in the image is distinctly Jean-Paul Sartre, probably the greatest existential thinker of all time. It is worth mentioning for those who don't know that existentialism is the category of philosophy that concerns itself with purpose of life and the general notion of existence.
Be seeing you!