Calvin and Hobbes is a comic strip written and illustrated by Bill Watterson, following the humorous antics of Calvin, an imaginative six-year old boy, and Hobbes, his energetic and sardonic—albeit stuffed—tiger. The pair are named after John Calvin, a 16th century French Reformation theologian, and Thomas Hobbes, a 17th century English political philosopher. The strip was syndicated daily from November 18, 1985 to December 31, 1995. At its height, Calvin and Hobbes was carried by over 2,400 newspapers worldwide. To date, more than 30 million copies of the 18 Calvin and Hobbes books have been printed. The strip is vaguely set in the contemporary Midwestern United States, on the outskirts of suburbia, a location probably inspired by Watterson's home town of Chagrin Falls, Ohio. Calvin and Hobbes appear in most of the strips, while a small number focus on other supporting characters. The broad themes of the strip deal with Calvin's flights of fantasy, his friendship with Hobbes, his misadventures, his views on a diverse range of political and cultural issues and his relationships and interactions with his parents, classmates, educators, and other members of society. The dual nature of Hobbes is also a recurring motif. Calvin sees Hobbes one way (alive), while other characters see him as something else (a stuffed animal).