A man who knows not his limitations is of no use to anyone.

What makes a scientist great is the care that he takes in telling you what is wrong with his results, so that you will not misuse them.

It is important that an aim never be defined in terms of activity or methods. It must always relate directly to how life is better for everyone. . . . The aim of the system must be clear to everyone in the system. The aim must include plans for the future. The aim is a value judgment.

You can not hear what you do not understand.

Knowledge is the key.

To manage one must lead. To lead, one must understand the work that he and his people are responsible for

People are entitled to joy in work.