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.
He who has so little knowledge of human nature as to seek happiness by changing anything but his own disposition will waste his life in fruitless efforts.
Life affords no higher pleasure than that of surmounting difficulties, passing from one step of success to another, forming new wishes and seeing them gratified.
