Military intelligence interrogators, however, their goal is to get information, to save lives, to stop the war, to find Saddam - whatever the information is going to be used for, at whatever cost.
Be unselfish. That is the first and final commandment for those who would be useful and happy in their usefulness. If you think of yourself only, you cannot develop because you are choking the source of development, which is spiritual expansion through thought for others.