By his machines man can dive and remain under water like a shark; can fly like a hawk in the air; can see atoms like a gnat; can see the system of the universe of Uriel, the angel of the sun; can carry whatever loads a ton of coal can lift; can knock down cities with his fist of gunpowder; can recover the history of his race by the medals which the deluge, and every creature, civil or savage or brute, has involuntarily dropped of its existence; and divine the future possibility of the planet and its inhabitants by his perception of laws of nature.

As a man thinketh, so is he, and as a man chooseth, so is he.

We walk alone in the world.

The learned and the studious of thought have no monopoly of wisdom. Their violence of direction in some degree disqualifies them to think truly.

We cannot overstate our debt to the Past, but the moment has the supreme claim.

In order for one to learn the important lessons of life, one must first overcome a fear each day.

Don't waste life in doubts and fears; spend yourself on the work before you, well assured that the right performance of this hour's duties will be the best preparation for the hours and ages that will follow it.