It is not enough to have a good mind; the main thing is to use it well.
All our knowledge begins with the senses, proceeds then to the understanding, and ends with reason. There is nothing higher than reason.
There is nothing more uncommon than common sense.
Turn your wounds into wisdom.
I've never known any trouble than an hour's reading didn't assuage.
Moderation in temper is always a virtue; but moderation in principle is always a vice.
It is better to remain silent and be thought a fool than to open one's mouth and remove all doubt.
He that cannot reason is a fool. He that will not is a bigot. He that dare not is a slave.
A mistake is always forgivable, rarely excusable and always unacceptable.
Nobody made a greater mistake than he who did nothing because he could do only a little.
And no one will listen to us until we listen to ourselves.
Rational discussion is useful only when there is a significant base of shared assumptions.
Things which matter most must never be at the mercy of things which matter least.
The best revenge is to be unlike him who performed the injury.
Nothing is so strong as gentleness, nothing so gentle as real strength
Do not pray for an easy life, pray for the strength to endure a difficult one.
Nothing is more intolerable than to have to admit to yourself your own errors.
Men are not prisoners of fate, but only prisoners of their own minds.
He who can destroy a thing, can control a thing.
A house divided against itself cannot stand.
Out of suffering have emerged the strongest souls; the most massive characters are seared with scars.