Stay true to yourself, don't change because of others' opinions.

对中国国民党同志共勉，1920年1月1日

When you don’t know how much to pay someone for a particular task， ask them “what would be fair” and their answer usually is.

Humans are allergic to change. They love to say, 'We've always done it this way.' I try to fight that. That's why I have a clock on my wall that runs counter-clockwise.