Quotes by Donald Rumsfeld

Don't blame the boss. He has enough problems.

There are known knowns. These are things we know that we know. There are known unknowns. That is to say, there are things that we know we don't know. But there are also unknown unknowns. There are things we don't know we don't know.

Think ahead. Don't let day-to-day operations drive out planning.

Be precise. A lack of precision is dangerous when the margin of error is small.

Enjoy your time in public service. It may well be one of the most interesting and challenging times of your life.