No enemy is indeed so terrible as a man of genius.

No government can be long secure without a formidable opposition. It reduces their supporters to that tractable number which can be managed by the joint influences of fruition and hope. It offers vengeance to the discontented, and distinction to the ambitious; and employs the energies of aspiring spirits, who otherwise may prove traitors in a division or assassins in a debate.

Nurture your mind with great thoughts, for you will never go any higher than you think.

If a man be gloomy let him keep to himself. No one has the right to go croaking about society, or what is worse, looking as if he stifled grief.

To achieve what you want, you have to be stronger than those around you

I have brought myself, by long meditation, to the conviction that a human being with a settled purpose must accomplish it, and that nothing can resist a will which will stake even existence upon its fulfillment.

Experience is the child of thought, and thought is the child of action.