To laugh often and much ... this is to have succeeded. Probably not from Emerson: here's the full quotation and the story.
Ralph Waldo EmersonIn the highest civilization, the book is still the highest delight. He who has once known its satisfactions is provided with a resource against calamity.
Ralph Waldo EmersonEvery day brings a ship, Every ship brings a word; Well for those who have no fear, Looking seaward well assured That the word the vessel brings Is the word they wish to hear.
Ralph Waldo Emerson