They - Young People have exalted notions, because they have not been humbled by life or learned its necessary limitations; moreover, their hopeful disposition makes them think themselves equal to great things - and that means having exalted notions. They would always rather do noble deeds than useful ones: Their lives are regulated more by moral feeling than by reasoning - all their mistakes are in the direction of doing things excessively and vehemently. They overdo everything - they love too much, hate too much, and the same with everything else.

The rattle is a toy suited to the infant mind, and education is a rattle or toy for children of larger growth.

We laugh at that which we cannot bear to face.

Our account does not rob the mathematicians of their science... In point of fact they do not need the infinite and do not use it.

The best way to teach morality is to make it a habit with children.

A body in motion can maintain this motion only if it remains in contact with a mover.

Indeed, we may go further and assert that anyone who does not delight in fine actions is not even a good man.