The greatest obstacle to discovery is not ignorance - it is the illusion of knowledge. ...

It is better to look ahead and prepare than to look back and regret. ...

Good for the body is the work of the body, and good for the soul is the work of the soul, and good for either is the work of the other. ...

Don't waste time learning the "tricks of the trade." Instead, learn the trade. ...

Promise only what you can deliver. Then deliver more than you promise. ...

Confidence is preparation. Everything else is beyond your control. ...

To the question of your life, you are the only answer. To the problems of your life, you are the only solution. ...

Seek freedom and become captive of your desires. Seek discipline and find your liberty. ...

Practice hope. As hopefulness becomes a habit, you will achieve a more consistent happy spirit. ...

Humility is not thinking less of yourself, it's thinking of yourself less. ...