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

So far, I have been a spectator in this theatre which is the world, but I am now about to mount the stage, and I come forward masked.

With me, everything turns into mathematics.

In order to seek truth, it is necessary once in the course of our life to doubt, as far as possible, of all things

Except our own thoughts, there is nothing absolutely in our power.

I am accustomed to sleep and in my dreams to imagine the same things that lunatics imagine when awake.

In order to improve the mind, we ought less to learn than to contemplate.

I think; therefore I am.

To live without philosophizing is in truth the same as keeping the eyes closed without attempting to open them.

If you would be a real seeker after truth, it is necessary that at least once in your life you doubt, as far as possible, all things.

Bad books engender bad habits, but bad habits engender good books.

Whenever anyone has offended me, I try to raise my soul so high that the offense cannot reach it.

Nothing is made from nothing.

To think? That’s it. It is thought. This alone cannot be detached from me. I am, I exist; that is certain.

Divide each difficulty into as many parts as is feasible and necessary to resolve it.

To live well is to live concealed.

It is best not to go on for great quest for truth , it will only make you miserable

The ’60s are presented to kids today as a commodity.

I believe violations to the Commodity Exchange Act (CEA) have taken place in silver markets and that any such violation of the law in this regard should be prosecuted.

Everything became exchangeable because everything became a commodity.

Health is not a commodity to be bargained for. It has to be earned through sweat.

The labor of a human being is not a commodity or article of commerce.

To alter the money value of commodities, by altering the value of money, and yet to raise the same money amount by taxes, is then undoubtedly to increase the burthens of society.

Gold and silver, like other commodities, have an intrinsic value, which is not arbitrary, but is dependent on their scarcity, the quantity of labour bestowed in procuring them, and the value of the capital employed in the mines which produce them.

If a commodity were in no way useful, – in other words, if it could in no way contribute to our gratification, – it would be destitute of exchangeable value, however scarce it might be, or whatever quantity of labour might be necessary to procure it.