Metaphysics is the attempt of the mind to rise above the mind.

My whinstone house my castle is, I have my own four walls.

Men worship the shows of great men; the most disbelieve that there is any reality of great men to worship.

These Arabs, the man Mahomet, and that one century, - is it not as if a spark had fallen, one spark, on a world of what proves explosive powder, blazes heaven-high from Delhi to Granada! I said, the Great man was always as lightning out of Heaven; the rest of men waited for him like fuel, and then they too would flame.

When we can drain the Ocean into mill-ponds, and bottle up the Force of Gravity, to be sold by retail, in gas jars; then may we hope to comprehend the infinitudes of man's soul under formulas of Profit and Loss; and rule over this too, as over a patent engine, by checks, and valves, and balances.

Nothing is more terrible than activity without insight.

Clever men are good, but they are not the best.