To quote Ralph Waldo Emerson, "The value of a principle is the number of things it will explain". This line is perhaps somewhat not that popular. Maybe due to its simplicity in itself that makes it a little bit too deep for most.

A person's principles indeed explain a plethora of things. This includes speech, behavior, and preferences among other things. In a way, this encompasses almost the entirety of an individual's personality.

Upholding principles is integral in building a reputation. Otherwise, it only makes a hypocrite out of a person in a risible manner. For instance, imagine a fitness instructor who is morbidly obese; or a self proclaimed financial guru who is without money.

Most likely, the abovementioned people would be found to be ironically funny. And it is also highly likely that you have just thought of at least one person who fits the bill. Also, it is highly likely that you have a smirk on your face right now due to the ridiculous person in your head.

Nobody wants to be that person. Sticking to principle is the way to avoid being that. And remember, "If you stand for nothing, you will fall for anything".