It is the calm, forgiving, equable, well-balanced mind that does the greatest amount of work.

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

Be devoted to conscientiousness. Guard your own mind.

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

More than those who hate you, more than all your enemies, an undisciplined mind does greater harm.

There is nothing so disobedient as an undisciplined mind, and there is nothing so obedient as a disciplined mind.