Frame your mind to mirth and merriment which bars a thousand harms and lengthens life.

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

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

Most folks are as happy as they make up their minds to be.

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

Be devoted to conscientiousness. Guard your own mind.