Those who have advanced rise to the mind which is in the head, - they have the play of their mental movements in the head itself. But all these are inside the body; man is, as it were, shut up in a box, his entire consciousness is confined within the organism. This imprisonment has to be undone.
Experience shows that what great role pratice and experience play in education; pratice, the prolonged exercice lead to habit: exemple suggests imitation. Habit can become a second nature, but, wrongly directed (or guided), it may also heighten (or intensify) unfortunate tendencies and be an obstacle to progress.
What call thou solitude? Is not the earth with various living creatures, and the air replenished, and all these at thy command to come and play before thee?
When you play competitive tennis you are competing against someone else and you have to win. Playing music I didn't have to win I had to become better within myself.
For suppose that every tool we had could perform its task, either at our bidding or itself perceiving the need, and if-like the statues made by Dædalus or the tripods of Hephæstus, of which the poet says that "self-moved they enter the assembly of the gods" - shuttles in a loom could fly to and fro and a plectrum play a lyre all self-moved, then master-craftsmen would have no need of servants nor masters of slaves.