Portrait painting benefitted greatly from such commissions and from the general appreciation of art by bourgeois clients, who supported portraiture as well as still-life and landscapes painting. In addition, the first significant art and dealer markets flourished in Holland at that time. With plenty of demand, Rembrandt was able to experiment with unconventional composition and technique, such as chiaroscuro. He demonstrated these innovations, pioneered by Italian masters such as Caravaggio, most notably in his famous "Night Watch" (1642). "The Anatomy Lesson of Dr. Tulp" (1632) is another fine example of Rembrandt's mastery of the group painting, in which he bathes the corpse
The Doctor (Doctor Who) night and the storm in the heart of the sun, he's ancient and forever, he burns at the centre of time..." and "the man who can turn an army around at the mention of his name". Though the Doctor tends to present a jocular, even childlike, persona, when the stakes rise—e.g., in "Pyramids of Mars" (1975)—that mask tends to fall, revealing a Doctor who is cold, driven, at times callous. This dark side sits in contrast to the Doctor's deep compassion, which manifests to different strength and effect across their incarnations. The Doctor prefers a pacifist solution to most problems,