You will be amazed at how far this gets you in life. Especially when you feel the need to tell a little white one, don't, it may not feel good and you may hurt someone's feelings, someone you care about, but you will gain more of their trust and respect over time.

It's the only way to get to the most important virtue there is: truth.

It's the only way to find what works for most people most of the time. Let your ideology, politics and beliefs come second to pragmatism and compromise and you'll always find the best solution.