Russell

“There is neither happiness nor misery in the world; there is only the comparison of one state with another, nothing more. He who has felt the deepest grief is best able to experience supreme happiness. We must have felt what it is to die, Morrel, that we may appreciate the enjoyments of life.
" Live, then, and be happy, beloved children of my heart, and never forget, that until the day God will deign to reveal the future to man, all human wisdom is contained in these two words, 'Wait and Hope.”
― Alexandre Dumas

“It's necessary to have wished for death in order to know how good it is to live.”
― Alexandre Dumas, The Count of Monte Cristo