All mankind is divided into three classes: those that are immovable, those that are movable, and those that move.

Since I cannot govern my own tongue, though within my own teeth, how can I hope to govern the tongue of others?

That as we enjoy great advantages from the inventions of others, we should be glad of an opportunity to serve others by any invention of ours, and this we should do freely and generously.

Watch the pennies and the dollars will take care of themselves.

Vicious actions are not hurtful because they are forbidden, but forbidden because they are hurtful.

It is the will of God and Nature that these mortal bodies be laid aside, when the soul is to enter into real life; 'tis rather an embrio state, a preparation for living; a man is not completely born until he be dead: Why then should we grieve that a new child is born among the immortals?

Genius is the ability to hold one's vision steady until it becomes reality