The crystal sphere of thought is as concentrical as the geological structure of the globe. As our soils and rocks lie in strata, concentric strata, so do all men's thinkings run laterally, never vertically.

To laugh often and much ... this is to have succeeded. Probably not from Emerson: here's the full quotation and the story.

As the traveler who has lost his way, throws his reins on his horse's neck, and trusts to the instinct of the animal to find his road, so must we do with the divine animal who carries us through this world

It now appears that the negro race is, more than any other, susceptible of rapid civilization. The emancipation is observed, in the islands, to have wrought for the negro a benefit as sudden as when a thermometer is brought out of the shade into the sun. It has given him eyes and ears.

Enthusiasm is one of the most powerful engines of success. When you do a thing, do it with all your might. Put your whole soul into it. Stamp it with your own personality. Be active, be energetic, be enthusiastic and faithful, and you will accomplish your object. Nothing great was ever achieved without enthusiasm.

The life of labor does not make men, but drudges.

Time dissipates to shining ether the solid angularity of facts.