Quote of the day - "Be conservative in what you do; be liberal in what you accept from others."

In RFC 793 (1981) the late, great Jon Postel, who wrote in an early specification of the Transmission Control Protocol, laid down one of the basic design principles of the Internet, Postel's Law or the Robustness Principle, that:

TCP implementations should follow a general principle of robustness: be conservative in what you do, be liberal in what you accept from others.

It's not only a philosophy of software design, but also the philosophy on being oneself.