Robert Burton was an Oxford clergyman and scholar. His book was first published in 1621. He adopts the title Democritus Junior after the Greek philosopher who was also “an expert physician, a politician, and an excellent mathematician“. Hippocrates described him as “a little wearish old man, very melancholy by nature”. In the preface, the author says: “I write of melancholy by being busy to avoid melancholy.” (Burton, 1621)