My son, I do not say these are foals and those asses, these little monkeys and those great baboons, as you would have me do. As I told you from the first, I regard them as earth's heroes. But I do not wish to believe them without cause, nor to accept those propositions whose antitheses (as you must have understood if you are not both blind and deaf) are so compellingly true.

I don't care if 1 is prime or not, if 2 is prime or not, if 3 is prime or not. All I care is that there are more stars in the heavens than primes in the earth.

They dispute not in order to find or even to seek Truth, but for victory, and to appear the more learned and strenuous upholders of a contrary opinion. Such persons should be avoided by all who have not a good breastplate of patience.

I who am in the night will move into the day.

I beg you, reject antiquity, tradition, faith, and authority! Let us begin anew by doubting everything we assume has been proven!

You explain right well, and you shew that you understand argument and are not a mere sophist since you accept that which cannot be denied.

That which we have lived is nothing; that which we live is a point; that which we have to live is not yet a point, but may be a point which, together, shall be and shall have been.