I have found that when a man reaches the advanced age of 71 years as I have, the continual sight of dark clothing is likely to have a depressing effect upon him. Light-colored clothing is more pleasing to the eye and enlivens the spirit. Now, of course, I cannot compel every one to wear such clothing just for my especial benefit, so I do the next best thing and wear it myself.
- quote in The New York Times, 8 December 1906

This suit, I may say, is the uniform of the Ancient and Honorable Order of Purity and Perfection, of which organization I am president, secretary, treasurer and sole member. I may add that I don't know of any one else who is eligible.You see, when a man gets to be 71, as I am, the world begins to look somber and dark. I believe we should do all we can to brighten things up and make ourselves look cheerful. You can't do that by wearing black, funereal clothes.And why shouldn't a man wear white? It betokens purity and innocence. I'm in favor of peek-a-boo waists and décolleté costumes. The most beautiful costume is the human skin, but since it isn't conventional or polite to appear in public in that garb along, I believe in wearing white.I don't know anything more hideous or disgusting in men's attire than the black clawhammer coat. A group of men thus adorned remind me more of a flock of crows than anything else. About the most becoming get up I ever saw in my life was out in the Sandwich Islands thirty years ago, where a native who wanted to appear at this best usually appeared in a pair of eyeglasses.
- quoted in Chicago Daily Tribune, 8 December 1906

As for black clothes, my aversion for them is incurable.
- Letter to Frances Nunnally, 28 March 1909