George Horace Lorimer said this quote

Of course, clothes don't make the man, but they make all of him except his hands and face during business hours, and that's a pretty considerable area of the human animal. A dirty shirt may hide a pure heart, but it seldom covers a clean skin. If you look as if you had slept in our clothes, most men will jump to the conclusion that you have, and you will never get to know them well enough to explain that your head is so full of noble thoughts that you haven't time to bother with the dandruff on your shoulders...Appearances are deceitful, I know, but so long as they are, there's nothing like having them deceive for us instead of against us.