Twice and thrice over, as they say, good is it to repeat and review what is good.
Numbers are the highest degree of knowledge. It is knowledge itself.
Perfect wisdom has four parts: Wisdom, the principle of doing things aright. Justice, the principle of doing things equally in public and private. Fortitude, the principle of not fleeing danger, but meeting it. Temperance, the principle of subduing desires and living moderately.
The highest form of pure thought is in mathematics.
A man is not learned until he can read, write and swim.
There should be no element of slavery in learning. Enforced exercise does no harm to the body, but enforced learning will not stay in the mind. So avoid compulsion, and let your children's lessons take the form of play.