Education and admonition commence in the first years of childhood, and last to the very end of life.

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

The science [geometry] is pursued for the sake of the knowledge of what eternally exists, and not of what comes for a moment into existence, and then perishes.

Human beings have Love for one another inborn in them - Love, reassembler of our ancient nature, who tries to make one out of two and to heal human nature.

The ludicrous state of solid geometry made me pass over this branch.

Consider how great is the encouragement which all the world gives to the lover; neither is he supposed to be doing anything dishonourable; but if he succeeds he is praised, and if he fail he is blamed.

The more the pleasures of the body fade away, the greater to me is the pleasure and charm of conversation.