Now if such a state as we have dreamed of cannot be found on Earth, it follows that leisure is necessary for everyone, because the one thing which might be preferred to leisure is nowhere to be found. If anyone says that to sail is the best of things, and then says that we ought not to sail in a sea in which shipwrecks were common occurrences, and where sudden storms often arise which drive the pilot back from his course, I should imagine that this man, while speaking in praise of sailing, was really forbidding me to unmoor my ship.