Don't criticize what you can't understand.

Doubt is the origin of wisdom

There's no sense in being precise when you don't even know what you're talking about.

The pendulum of the mind oscillates between sense and nonsense, not between right and wrong.

Knowing is not enough, we must apply. Willing is not enough, we must do.

Achievement brings its own anticlimax.

Do not pray for an easy life, pray for the strength to endure a difficult one.

I don't know, I don't care, and it doesn't make any difference.

The oldest, shortest words- 'yes' and 'no'- are those which require the most thought.

All differences in this world are of degree, and not of kind, because oneness is the secret of everything.

One who gains strength by overcoming obstacles possesses the only strength which can overcome adversity.

Wonder is the beginning of wisdom.

One who deceives will always find those who allow themselves to be deceived.

Time flies over us, but leaves its shadow behind.

Kind words don't cost much. Yet they accomplish much.

A man is literally what he thinks.

To be one, to be united is a great thing. But to respect the right to be different is maybe even greater.

Let there be spaces in your togetherness.

A crust eaten in peace is better than a banquet partaken in anxiety.

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

There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self.