Images from one strip in which Calvin and Hobbes dance to loud music at night were commonly used for copyright violations.  Others, including Bill Amend (Foxtrot), Johnny Hart (BC, Wizard of Id) and Barbara Brandon (Where I'm Coming From) supported him.  The book chronicles Martell's quest to tell the story of Calvin and Hobbes and Watterson through research and interviews with people connected to the cartoonist and his work. Commonly cited as "the last great newspaper comic", Calvin and Hobbes has enjoyed broad and enduring popularity, influence, and academic and philosophical interest. Watterson took a second sabbatical from April 3 through December 31, 1994. Stating his belief that he had achieved everything that he wanted to within the medium, he announced his intention to work on future projects at a slower pace with fewer artistic compromises. In one of these instances, Calvin and Hobbes claim to be the sole guardians of high culture; in another, Hobbes admires Calvin's willingness to put artistic integrity above marketability, causing Calvin to reconsider and make an ordinary snowman.  Watterson himself depicted a grown-up Calvin and Susie as a married couple in a few of his Sunday strips, with the story arc continuing until Calvin's daydream abruptly ends. Calvin's father is a patent attorney (like Watterson's own father), while his mother is a stay-at-home mom. Although Calvin and Hobbes underwent continual artistic development and creative innovation over the period of syndication, the earliest strips demonstrate a remarkable consistency with the latest. ", Calvin often creates horrendous/dark humor scenes with his snowmen and other snow sculptures. Displaying his creation to Hobbes, he remarks, "Academia, here I come! These were later reproduced in twos in color in the "Treasuries" (Essential, Authoritative and Indispensable), except for the contents of Attack of the Deranged Mutant Killer Monster Snow Goons. Much like Calvin, Susie has a mischievous (and sometimes aggressive) streak as well, which the reader witnesses whenever she subverts Calvin's attempts to cheat on school tests by feeding him incorrect answers, or whenever she fights back after Calvin attacks her with snowballs or water balloons. , Bill Watterson took two sabbaticals from the daily requirements of producing the strip. In one example, Calvin carefully crafts an "artist's statement", claiming that such essays convey more messages than artworks themselves ever do (Hobbes blandly notes, "You misspelled Weltanschauung"). In a 1989 interview in The Comics Journal he described the appeal of being able to do things with a moving image that can't be done by a simple drawing: the distortion, the exaggeration and the control over the length of time an event is viewed. The first took place from May 5, 1991 to February 1, 1992, and the second from April 3 through December 31, 1994. Three of his alter egos are well-defined and recurrent: Calvin also has several adventures involving corrugated cardboard boxes, which he adapts for many imaginative and elaborate uses. Many editors and even a few cartoonists including Bil Keane (The Family Circus) and Bruce Beattie (Snafu) criticized him for what they perceived as arrogance and an unwillingness to abide by the normal practices of the cartoon business. " In later strips, Calvin's creative instincts diversify to include sidewalk drawings (or, as he terms them, examples of "suburban postmodernism"). Heritage Auctions sold it in 2012 for $203,150, a record for an original Calvin & Hobbes strip. Several of these, including Rosalyn, his babysitter; Mrs Wormwood, his teacher; and Moe, the school bully, recur regularly through the duration of the strip. " In the 2013 Community episode "Paranormal Parentage," the characters Abed Nadir (Danny Pudi) and Troy Barnes (Donald Glover) dress as Calvin and Hobbes, respectively, for Halloween.  In 2010, reruns of the strip appeared in more than 50 countries, and nearly 45 million copies of the Calvin and Hobbes books had been sold worldwide. They go into Calvin's treehouse for their club meetings and often get into fights during them. , Watterson longed for the artistic freedom allotted to classic strips such as Little Nemo and Krazy Kat, and in 1989 he gave a sample of what could be accomplished with such liberty in the opening pages of the Sunday strip compilation, The Calvin and Hobbes Lazy Sunday Book—an 8-page previously unpublished Calvin story fully illustrated in watercolor. , The first strip was published on November 18, 1985 in 35 newspapers. He uses the snowman for social commentary, revenge or pure enjoyment. One estimate places the value of licensing revenue forgone by Watterson at $300–$400 million. Calvin exclaims as they zoom off over the snowy hills on their sled, leaving, according to one critic ten years later, "a hole in the comics page that no strip has been able to fill.". " The term has also been referred to in newspapers, books and university courses.. Susie is studious and polite (though she can be aggressive if sufficiently provoked), and she likes to play house or host tea parties with her stuffed animals. " He typically exhibits a greater understanding of consequences than Calvin, although rarely intervenes in Calvin's activities beyond a few oblique warnings.  In response, Watterson defends what Calvin's parents do, remarking that in the case of parenting a kid like Calvin, "I think they do a better job than I would." The game is portrayed as a rebellion against conventional team sports and became a staple of the final 5 years of the comic. , In a 2009 evaluation of the entire body of Calvin and Hobbes strips using grounded theory methodology, Christijan D. Draper found that: "Overall, Calvin and Hobbes suggests that meaningful time use is a key attribute of a life well lived," and that "the strip suggests one way to assess the meaning associated with time use is through preemptive retrospection by which a person looks at current experiences through the lens of an anticipated future...", Jamey Heit's Imagination and Meaning in Calvin and Hobbes, a critical and academic analysis of the strip, was published in 2012. Calvin also interacts with a handful of secondary characters.  Licensed prints of Calvin and Hobbes were made available and have also been included in various academic works.