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

The civilized man has built a coach, but has lost the use of his feet.

The unsaid part is the best of every discourse.

Science corrects the old creeds, sweeps away, with every new perception, our infantile catechisms, and necessitates a faith commensurate with the grander orbits and universal laws which it discloses yet it does not surprise the moral sentiment that was older and awaited expectant these larger insights.

The line of beauty is the line of perfect economy.

What new thoughts are suggested by seeing a face of country quite familiar, in the rapid movement of the rail-road car!

Self Esteem::"It is very easy in the world to live by the opinion of the world. It is very easy in solitude to be self-centered. But the finished man is he who in the midst of the crowd keeps with perfect sweetness the independence of solitude. I knew a man of simple habits and earnest character who never put out his hands nor opened his lips to court the public, and having survived several rotten reputations of younger men, honor came at last and sat down with him upon his private bench from which he had never stirred."