The greatest minds are capable of the greatest vices as well as of the greatest virtues.

It is only prudent never to place complete confidence in that by which we have even once been deceived.

—Rene Descartes

The first precept was never to accept a thing as true until I knew it as such without a single doubt.

—Rene Descartes

It is not enough to have a good mind. The main thing is to use it well.

—Rene Descartes

I think; therefore I am.

—Rene Descartes

It is not enough to have a good mind; the main thing is to use it well.

—Rene Descartes

The gods are just, and of our pleasant vices
Make instruments to plague us.

—William Shakespeare

The better part of valour is discretion.

—William Shakespeare

Nothing is as certain as that the vices of leisure are gotten rid of by being busy.

—Seneca

The problem with people who have no vices is that generally you can be pretty sure they're going to have some pretty annoying virtues.

—Elizabeth Taylor

It is a great thing to know our vices.

—Cicero