Permanence, perseverance and persistence in spite of all obstacle s, discouragement s, and impossibilities: It is this, that in all things distinguishes the strong soul from the weak.

There is something in man which your science cannot satisfy.

True humor springs not more from the head than from the heart. It is not contempt; its essence is love. It issues not in laughter, but in still smiles, which lie far deeper.

We have chosen Mahomet not as the most eminent Prophet; but as the one we are freest to speak of. He is by no means the truest of Prophets; but I do esteem him a true one.

Make yourself an honest man, and then you may be sure there is one less rascal in the world.

Conclusive facts are inseparable from inconclusive except by a head that already understands and knows.

Wise man was he who counselled that speculation should have free course, and look fearlessly towards all the thirty-two points of the compass, whithersoever and howsoever it listed.