Do not use compulsion, but let early education be rather a sort of amusement.

The most important part of education is proper training in the nursery.

... the community suffers nothing very terrible if its cobblers are bad and become degenerate and pretentious; but if the Guardians of its laws and constitution, who alone have the opportunity to bring it good government and prosperity, become a mere sham, then clearly it is completely ruined.

Numbers are the highest degree of knowledge. It is knowledge itself.

Let no one destitute of geometry enter my doors.

All wars are fought for the sake of getting money.

The cause of all the blunders committed by man arises from this excessive self-love. For the lover is blinded by the object loved; so that he passes a wrong judgment on what is just, good and beautiful, thinking that he ought always to honor what belongs to himself in preference to truth. For he who intends to be a great man ought to love neither himself nor his own things, but only what is just, whether it happens to be done by himself, or by another.