This is really in my opinion one of the best books ever, it is not just about making money. Principles highly relevant for today. Am not expanding on this to encourage you to read the original!
The Power of Nice: How to Conquer the Business World With Kindness by Linda Kaplan Thaler & Robin Koval
Success comes not only from hard work and talent, but also from being nice to others – everyone you meet is important, and it is