The mind is everything. What you think you become.
It is not enough to have a good mind; the main thing is to use it well.
The mind is like an iceberg, it floats with one-seventh of its bulk above water.
Old minds are like old horses; you must exercise them if you wish to keep them in working order.
The strong man is the one who is able to intercept at will the communication between the senses and the mind.
The great end of learning is nothing else but to seek for the lost mind.
The evolution of the brain not only overshot the needs of prehistoric man, it is the only example of evolution providing a species with an organ which it does not know how to use.
The highest endeavor of the mind, and the highest virtue, is to understand things by intuition.
Remember the mind is your best muscle. Big arms can move rocks, but big words can move mountains.
Beauty is no quality in things themselves: it exists merely in the mind which contemplates them; and each mind perceives a different beauty.
To hate, to love, to think, to feel, to see; all this is nothing but to perceive.
The mind is divided, like a rider on an elephant, and the rider's job is to serve the elephant.