The art of being happy would require to know how to make a good altruistic impression and especially to give an irresistible effigy to difficulties. The unhappy or disgruntled gaze watches and disturbs happiness by throwing on all things the color of boredom, that sort of negativistic power to despise all offerings; thus a lying impatience and a sad anger towards ingenious people who make happiness with little, like children make gardens. Experience shows enough that one cannot entertain those who are bored with themselves! From then on, it would be necessary to flee from ordinary despair in order to face the despair of one's own cognition...