Kurt Vonnegut Jr. was an American novelist and Humanist known for his black comedy and satirical writing. The quote would be more humorous if it weren’t so true.

A bit of his bio from wikipedia:
Kurt Vonnegut’s experience as a soldier and prisoner of war had a profound influence on his later work. As a private with the 106th Infantry Division, Vonnegut, along with five other battalion scouts, wandered behind enemy lines for several days. They were cut off from their battalion and captured by Wehrmacht troops on December 14, 1944. Imprisoned in Dresden, Vonnegut was chosen as a leader of the POWs because he spoke some German. After insulting some German soldiers that were guarding him he was beaten and had his position as leader taken away.[8] While a prisoner, he witnessed the fire bombing of Dresden in February 1945 which destroyed most of the city.
Vonnegut was one of a group of American prisoners of war to survive the attack in an underground slaughterhouse meat locker used by the Germans as an ad hoc detention facility. The Germans called the building Schlachthof Fünf (Slaughterhouse Five) which the Allied POWs adopted as the name for their prison. Vonnegut said the aftermath of the attack was “utter destruction” and “carnage unfathomable.” This experience was the inspiration for his famous novel, Slaughterhouse Five, and is a central theme in at least six of his other books. In Slaughterhouse Five he recalls that the remains of the city resembled the surface of the moon, and that the Germans put the surviving POWs to work, breaking into basements and bomb shelters to gather bodies for mass burial, while German civilians cursed and threw rocks at them. Vonnegut eventually remarked, “There were too many corpses to bury. So instead the Germans sent in troops with flamethrowers. All these civilians’ remains were burned to ashes.”
Full Wikipedia entry here: K Vonnegut