The brain can be developed just the same as the muscles can be developed, if on will only take the pains to trainthe mind to think.

The strong man is the one who is able to intercept at will the communication between the senses and the mind.

The eye sees all, but the mind shows us what we want to see.

Once you have made up your mind, stick to it; there no longer any 'if' or 'but'.

The thing to do is to keep your mind when the world around you is losing theirs.

Age is an issue of mind over matter. If you don't mind, it doesn't matter.