From Blaise Pascal’s Pensees:
Men are entrusted from infancy with the care of their honor, their property, their friends, and even with the property and the honor of their friends. They are overwhelmed with business, with the study of languages, and with physical exercises; and they are made to understand that they cannot be happy unless their health, their honor, their fortune and that of their good friends be in good condition, and that a single thing wanting will make them unhappy. Thus they are given cares and business which make them bustle about from break of day. — It is, you will exclaim, a strange way to make them happy! What more could be done to make them miserable? — Indeed! what could be done? We should only have to relieve them from all these cares; for then they would see themselves: they would reflect on what they are, whence they came, whither they go, and thus we cannot employ and divert them too much. And this is why, after having given them to so much business, we advise them, if they have some time for relaxation, to employ it in amusement, in play, and to be always fully occupied.
How hollow and full of ribaldry is the heart of man!