I just finished a very good book: Dr. John Rutledge's Lessons from a Road Warrior (see its Amazon page here).
Here's one of my favorite quotes from it:
"I am not a partisan; I am a principle-an. That means I will support any candidate, from any party, whose principles (if I am able to detect any) make sense to me. I decided long ago that I can’t live with two masters—I can’t always be loyal to my principles and to my tribe at the same time. I chose principles. Some people don’t like that. They should learn to get used to disappointment."
[FYI, one of many interesting tidbits: Rutledge estimates total US assets to be in the neighborhood of $200 trillion.]