There's no sense in being precise when you don't even know what you're talking about.
It is better to remain silent and be thought a fool than to open one's mouth and remove all doubt.
Promises are like crying babies in a theater, they should be carried out at once.
Be silent or let thy words be worth more than silence.
The greatest minds are capable of the greatest vices as well as of the greatest virtues.
Whenever you find yourself on the side of the majority, it is time to pause and reflect.
A house divided against itself cannot stand.
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self.
Things which matter most must never be at the mercy of things which matter least.
I think, therefore I am.
All the great things are simple, and many can be expressed in a single word: freedom; justice; honor; duty; mercy; hope.
We may encounter many defeats but we must not be defeated.
He who chooses the beginning of the road chooses the place it leads to.
Those who cannot work with their hearts achieve but a hollow, half-hearted success that breeds bitterness all around.
It is easy to be brave at a safe distance.
Rational discussion is useful only when there is a significant base of shared assumptions.
If you're happy, don't worry you'll get over it.
Moderation in temper is always a virtue; but moderation in principle is always a vice.
One who deceives will always find those who allow themselves to be deceived.
There are four ways, and only four ways, in which we have contact with the world. We are evaluated and classified by these four contacts: what we do, how we look, what we say, and how we say it.
The essence of knowledge is, having it, to apply it; not having it, to confess your ignorance.