“It was sad how the fact of not being able to share a joke separated one from people. Separated, of course, was too strong a word, but it created a frontier, a water-shed for experience, instead of a valley. Failure to see the same things as funny often meant a general failure to see eye to eye, because humour was common ground where the high-brow and the low-brow, the rich and the poor, could meet without self-consciousness.”
L.P. Hartley, The Sixth Heaven