Everybody's got a different circle of competence. The important thing is not how big the circle is. The important thing is staying inside the circle.

What is important is not the quantity of your knowledge but its quality. You can know many things without knowing the most important.

The spirit of man is more important than mere physical strength, and the spiritual fiber of a nation than its wealth. The Bible is endorsed by the ages. Our civilization is built upon its words. In no other book is there such a collection of inspired wisdom, reality, and hope.

It's much easier to stay out of trouble now than to get out of trouble later.

Knowing the edge of your competency is important. If you think you know more than you do, you will get in trouble.

It's good to learn from your mistakes. It's better to learn from other people's mistakes.