"The two enemies of human happiness are pain and boredom." ― Arthur Schopenhauer Topic(s): Happiness Tags: enemies, human More From Arthur Schopenhauer "The greatest of follies is to sacrifice health for any other kind of happiness." "Sleep is the interest we have to pay on the capital which is called in at death; and the higher the rate of interest and the more regularly it is paid, the further the date of redemption is postponed." "Nature shows that with the growth of intelligence comes increased capacity for pain, and it is only with the highest degree of intelligence that suffering reaches its supreme point." More In Happiness "No period of my life has been one of such unmixed happiness as the four years which have been spent within college walls."― Horatio Alger "Happiness is not something ready made. It comes from your own actions."― Dalai Lama "Love is the master key that opens the gates of happiness."― Oliver Wendell Holmes