Raymond Hull — Canadian Playwright died on December 30, 1985

Raymond Hull was a Canadian playwright, television screenwriter, and lecturer. He also wrote many non-fiction books, numerous magazine articles, short stories, and poetry. He is best known as the co-author of the book The Peter Principle with Laurence J. Peter. He is also known for the saying "He who trims himself to suit everyone will soon whittle himself away.".. (wikipedia)

All marriages are happy. It's the living together afterward that causes all the trouble.
He who trims himself to suit everyone will soon whittle himself away.
The applause of a single human being is of great consequence.