The Prophet (SAWA) passed by an insane person and asked, 'What is wrong with him?' He was told that? he had gone mad. The Prophet (SAWA) then remarked, 'Rather, he is afflicted. The one who has gone mad is the one who prefers this world to the next.'
Prophet Muhammad al-Mustafa [sawa]
Mishkat al-Anwar, p. 469 no. 1675