Hobbes is named after gloomy 17th-century English political philosopher Thomas Hobbes.
Calvin is named after the famous 16th-century French Reformation theologian John Calvin.
Calvin and Hobbes is a comic strip by American cartoonist Bill Watterson, and follows the humorous antics of Calvin, a precocious and adventurous six-year-old boy, and his sardonic stuffed tiger Hobbes.
The comic strip was conceived when Bill Watterson began cartooning during his spare time while working in an advertising job he detested.
The first Calvin and Hobbes strip was published on November 18, 1985, and not long after the strip was in wide circulation outside the United States.