Laughter, while it lasts, slackens and unbraces the mind, weakens the faculties and causes a kind of remissness and dissolution in all the powers of the soul; and thus it may be looked on as weakness in the composition of human nature. But if we consider the frequent reliefs we receive from it and how often it breaks the gloom which is apt to depress the mind and damp our spirits, with transient, unexpected gleams of joy, one would take care not to grow too wise for so great a pleasure of life.
Joseph Addison