Principles are ways of successfully dealing with reality to get what you want out of life.
Ray Dalio, one of the world’s most successful investors and entrepreneurs, cites principles as his key to success.
Being calm and reasonable in how you present your view will help prevent the "flight-or-fight" animal/amygdala reaction in others. Be reasonable and expect others to be reasonable. Ask them to point to the evidence that supports their point of view. Remember, it is not an argument; it is an open exploration of what's true. Demonstrating that you are taking in what they are telling you can be helpful.