The only real mistake is the one from which we learn nothing.

The one you buy will be the only one that doesn't work.

Early to bed and early to rise, Makes a man healthy, wealthy, and wise.

Energy may be likened to the bending of a crossbow; decision,to the releasing of a trigger.

As the soft yield of water cleaves obstinate stone, So to yield with life solves the insolvable: To yield, I have learned, is to come back again.

Real knowledge is to know the extent of one's ignorance.

Property is surely a right of mankind as real as liberty.

I wanted to change the world. But I have found that the only thing one can be sure of changing is oneself.

He who is slowest in making a promise is most faithful in its performance.

If you buy what you do not need, you will need what you cannot buy.

A wise man can learn more from a foolish question than a fool can learn from a wise answer.

Learning and wisdom are superfluities, the surface glitter merely, but it is the heart that is the seat of all power.

Convictions are more dangerous enemies of truth than lies.

Share our similarities, celebrate our differences.

Intelligence is a moral category.

The road of excess leads to the palace of wisdom.

What's done can't be undone.

Creativity is the process of having original ideas that have value.

Never ruin an apology with an excuse.

All imperfection is easier to tolerate if served up in small doses.

Only idiots refuse to change their minds.