To preserve health is a moral and religious duty: for health is the basis of all social virtues; and we can be useful no longer than while we are well.
Samuel JohnsonHe that would travel for the entertainment of others, should remember that the great object of remark is human life. Every Nation has something peculiar in its Manufactures, its Works of Genius, its Medicines, its Agriculture, its Customs, and its Policy. He only is a useful Traveller, who brings home something by which his country may be benefited; who procures some supply of Want, or some mitigation of Evil, which may enable his readers to compare their condition with that of others, to improve it whenever it is worse, and whenever it is better to enjoy it.
Samuel Johnson