A hearty laugh gives one a dry cleaning, while a good cry is a wet wash. – Puzant Kevork Thomajan

For one seldom hears a genuine laugh nowadays, and much of the phraseology of laughter is a mere fashion of speech. There are many people whose sides have never ached from over-indulgence in the outward expression of mirth…. With some persons a wheeze or a chuckle is the utmost they can compass. – “Laughter,” in The Spectator for the week ending Saturday, January 19, 1889

No man who has once heartily and wholly laughed can be altogether irreclaimably bad. – Thomas Carlyle, Sartor Resartus