Mark Twain
Chapters From My Autobiography - Chapter V
Susy's remark about my strong language troubles me, and I must go back to it. All through the first ten years of my married life I kept a constant and discreet watch upon my tongue while in the house, and went outside and to a distance when circumstances were too much for me and I was obliged to seek relief. I prized my wife's respect and approval above all the rest of the human race's respect and approval. I dreaded the day when she should discover that I was but a whited sepulchre partly freighted with suppressed language. I was so careful, during ten years, that I had not a doubt that my suppressions had been successful.