Charles Allan Gilbert, better known as C. Allan Gilbert, was an American illustrator. He is especially remembered for a widely published drawing titled All Is Vanity. The drawing employs a double image in which the scene of a woman admiring herself in a mirror of her vanity table, when viewed from a distance, appears to be a human skull. The title is also a pun, as this type of dressing-table is also known as a vanity. The phrase "All is vanity" comes from Ecclesiastes 1:2 It refers to the vanity and pride of humans. In art, vanity has long been represented as a woman preoccupied with her beauty. And art that contains a human skull as a focal point is called a memento mori, a work that reminds people of their mortality.