To laugh often and much ... this is to have succeeded. Probably not from Emerson: here's the full quotation and the story.
Ralph Waldo EmersonThat which we call character is a reserved force which acts directly by presence, and without means. It is conceived of as a certain undemonstrable force, a familiar or genius, by whose impulses the man is guided, but whose counsels he cannot impart.
Ralph Waldo EmersonHistory is full, down to this day, of the imbecility of kings and governors. They are a class of persons much to be pitied, for they know not what they should do.
Ralph Waldo Emerson