One must imagine Sisyphus happy

...The final chapter of the myth of Sisyphus by Albert Camus compares the absurdity of man's life with the situation of Sisyphus, a figure of Greek mythology who was condemned to repeat forever the same meaningless task of pushing a rock up a mountain, only to see it roll down again. The essay concludes, "The struggle itself...is enough to fill a man's heart. One must imagine Sisyphus happy."