If one has made a mistake, and fails to correct it, one has made a greater mistake.

Not by force shall the children learn, but through play

Better a little which is well done, than a great deal imperfectly.

If someone separated the art of counting and measuring and weighing from all the other arts, what was left of each (of the others) would be, so to speak, insignificant.

In order for man to succeed in life, God provided him with two means, education and physical activity. Not separately, one for the soul and the other for the body, but for the two together. With these means, man can attain perfection.

Geometry draws the soul towards truth.

The first and the best victory is to conquer self.