“All that is necessary to right action is right judgment, and to the best action the most correct judgment.”

To know what people really think, pay attention to what they do, rather than what they say.

Let whoever can do so deceive me, he will never bring it about that I am nothing, so long as I continue to think I am something.

Am I so tied to a body and senses that I am incapable of existing without them?

Each problem that I solved became a rule which served afterwards to solve other problems.

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

Masked, I advance.

There is nothing more ancient than the truth.

When it is not in our power to determine what it true, we ought to follow what is most probable.

For I found myself embarrassed with so many doubts and errors that it seemed to me that the effort to instruct myself had no effect other than the increasing discovery of my own ignorance

I desire to live in peace and to continue the life I have begun under the motto ‘to live well you must live unseen’.

Truths are more likely to have been discovered by one man than by nation

I doubt, therefore I think, therefore I am.

But what then am I? A thing that thinks. What is that? A thing that doubts, understand, affirms, denies, wills, refuses, and that also imagines and senses.

He who hid well, lived well.

Common sense is the most widely shared commodity in the world, for every man is convinced that he is well supplied with it.

One should never judge anything unless it is known

Those who can think, but cannot express what they think, place themselves at the level of those who cannot think.

A leader, once convinced a particular course of action is the right one, must have the determination to stick with it and be undaunted when the going gets tough.

If you want to be respected for your actions, then your behavior must be above reproach. If our lives demonstrate that we are peaceful, humble, and trusted, this is recognized by others.

Out of anger comes controversy, out of controversy comes conversation, out of conversation comes action.

To make one good action succeed another, is the perfection of goodness.

Dreams and reality are opposites. Action synthesizes them.

I have striven not to laugh at human actions, not to weep at them, nor to hate them, but to understand them.

I don’t really like talking. I like to execute. I’m not a talking person. I’m an action person.