The ultimate authority must always rest with the individual's own reason and critical analysis.

Chaos is a name for any order that produces confusion in our minds.

Never put off for tomorrow, what you can do today.

All truth passes through three stages. First, it is ridiculed. Second, it is violently opposed. Third, it is accepted as being self-evident.

A friend to all is a friend to none

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

Language is very powerful. Language does not just describe reality. Language creates the reality it describes.

Men are not prisoners of fate, but only prisoners of their own minds.

It takes a great deal of bravery to stand up to our enemies, but just as much to stand up to our friends.

Half the world is composed of people who have something to say and can't, and the other half who have nothing to say and keep on saying it.

Wonder is the beginning of wisdom.

The more that you read, the more things you will know. The more that you learn, the more places you'll go.

The greatest of all mistakes is to do nothing because you think you can only do a little

None but ourselves can free our minds.

When I stand before God at the end of my life, I would hope that I would not have a single bit of talent left, and could say, 'I used everything you gave me'.

A proverb is much matter distilled into few words.

Time flies over us, but leaves its shadow behind.

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

Good means not merely not to do wrong, but rather not to desire to do wrong.

Act enthusiastic and you will be enthusiastic

A man may imagine things that are false, but he can only understand things that are true.