The heart which is not struck by the sweet smiles of an infant is still asleep (Hazrat Inayat Khan) |  Love sees as a child sees |  We do not stop playing because we are old; we grow old because we stop playing. |  Life was a funny thing that occured on the way to the grave (Quentin Crisp) |  When I grow up I want to be a little boy (Joseph Heller) |  Please do not say, “It is morning”, and dismiss it with a name of yesterday. See it for the first time as a newborn child that has no name (Rabindranath Tagore) | Anyone who keeps learning stays young. The greatest thing in life is to keep your mind young (Henry Ford) |  Laughter is higher than all pain (Elbert Hubart) |  Laughter is a most healthful exertion (Christoph Wilhelm Hufeland) |  A merry heart doeth good like a medicine; but a broken spirit drieth the bones (Proverbs 17:22) |  Physician, be happy thyself (Luke 4:23) |  He who laughs best today, will also laugh last (Friedrich Wilhelm Nietzsche) |  The most wasted day is that in which we have not laughed |  We don’t laugh because we’re happy—we’re happy because we laugh (williams james) |  The ability to laugh at oneself, in particular, is a vital psychological immunity against the modern thinking disease of ‘over-seriousness’ |  Humour is a whisper from the Soul, imploring mind and body to relax, let go and be at peace again |  There cannot be a crisis next week. My schedule is already full (Henry Kissinger) |  Anything awful makes me laugh. I misbehaved once at a funeral (Charles Lamb) |  I have a new philosophy. I’m going to dread only one day at a time (Charles Schultz) |  Laughter is the best way to make somebody’s heart beat (R. Holden) |  Laughter is an affirmation of dignity, a declaration of man’s superiority to all that befalls him (Romain Gary) |  Laugh, and the world laughs with you (Ella Wheeler Wilcox) |  Good humour is one of the best articles of dress one can wear in society (William Makepeace Thackeray) |  A Laugh is a laugh is a laugh (Inspired by Gertrude Stein) |  Laughter is a highly addictive positive contagion: if somebody starts, it’s very difficult to stop (R. Holden) |  Laugh, and I’ll tell you who you are (R. Holden) |  Laughter is not at all a bad beginning for a friendship, and it is by far the best ending for one (Oscar Wilde) |  One funny friend in life makes up for all the trouble, toil and strife (R. Holden) |  A good laugh is sunshine in a house (William Makepeace Thackeray) |  What magic there is in a girl’s smile. It is the raisin which, dropped in the yeast of male complacency induces fermentation (P.G. Wodehouse) |  Laughter is the shortest distance between two people (Victor Borge) |  By helping a person to laugh, you are helping that person to live (R. Holden) |  A laugh is worth a hundred groans in any market (Charles Lamb) |  When work is a pleasure, life is joy! When work is a duty, life is slavery. (Maxim Gorky) |  A winning smile makes winners of us all |  Far and away the best prize that life offers is the chance to work hard at work worth doing (Theodore Roosevelt) |  I am persuaded that every time a man smiles, but much more when he laughs, it adds something to this fragment of life (Laurence Sterne) |  It is a test of a good religion whether you can make a joke of it (G.K. Chesterton) |  Let there be mirth on Heaven and Earth (R. Holden) |  It is more fitting for a man to laugh at life than to lament over it (Seneca) |  Let us live while we live (Philip Doddridge) |  God made both tears and laughter and both for kind purposes; for as laughter enables mirth and surprise to breathe freely (Leigh Hunt) |  Laugh if you are wise (Latin poet Martial) |  Laughter can facilitate love; love can facilitate laughter. To put in another way: through laughter, we learn to love; trough love, we learn to laugh.
Robert Holden, Laughter: The Best Medicine. The Healing Power if Happiness, Humour, and Laughter, (London: HarperCollinsPublisher, 1993), 15-122.