Success teaches us nothing; only failure teaches. - Hyman G. Rickover

The man in charge must concern himself with details. If he does not consider them important, neither will his subordinates. Yet “the devil is in the details.” It is hard and monotonous to pay attention to seemingly minor matters. In my work, I probably spend about ninety-nine percent of my time on what others may call petty details. Most managers would rather focus on lofty policy matters. But when the details are ignored, the project fails. No infusion of policy or lofty ideals can then correct the situation.

Nature is not as forgiving as Christ.

The task of finding a purpose in life also calls for perseverance. I have seen many young men who rush out into the world with their messages, and when they find out how deaf the world is, they withdraw to wait and save their strength. They believe that after a while they will be able to get up on some little peak from which they can make themselves heard. Each thinks that in a few years he will have gained a standing, and then he can use his power for good. Finally the time comes, and with it a strange discovery: he has lost his horizon of thought. Without perseverance, ambition and a sense of responsibility have evaporated.