All married couples should learn the art of battle as they should learn the art of making love. Good battle is objective and honest - never vicious or cruel. Good battle is healthy and constructive and brings to a marriage the principles of equal partnership.
Good management is the art of making problems so interesting and their solutions so constructive that everyone wants to get to work and deal with them.
There's nothing wrong with anger provided you use it constructively.
We are approaching a new age of synthesis. Knowledge cannot be merely a degree or a skill... it demands a broader vision capabilities in critical thinking and logical deduction without which we cannot have constructive progress.