Plato
(page 2)
Walking is magic. Can't recommend it highly enough. I read that Plato and Aristotle did much of their brilliant thinking together while ambulating. The movement, the meditation, the health of the blood pumping, and the rhythm of footsteps... this is a primal way to connect with one's deeper self.
Ignorance of all things is an evil neither terrible nor excessive, nor yet the greatest of all; but great cleverness and much learning, if they be accompanied by a bad training, are a much greater misfortune.
Nothing can be more absurd than the practice that prevails in our country of men and women not following the same pursuits with all their strengths and with one mind, for thus, the state instead of being whole is reduced to half.
If I were again beginning my studies, I would follow the advice of Plato and start with mathematics.