If marriage be best for mankind, it must be evidently best for individuals
 Samuel Johnson, The History of Rasselas, Prince of Abissinia (1759). copy citation

Context

“I see no danger that the present generation should omit to leave successors behind them; we are not now inquiring for the world, but for ourselves.” CHAPTER XXIX THE DEBATE ON MARRIAGE (continued) . “The good of the whole,” says Rasselas, “is the same with the good of all its parts. If marriage be best for mankind, it must be evidently best for individuals; or a permanent and necessary duty must be the cause of evil, and some must be inevitably sacrificed to the convenience of others. In the estimate which you have made of the two states, it appears that the incommodities of a single life are in a great measure necessary and certain, but those of the conjugal state accidental and avoidable.” source