What is mine is yours quote

I will look upon death or upon a comedy with the same expression of countenance: I will submit to labors, however great they may be, supporting the strength of my body by that of my mind: I will despise riches when I have them as much as when I have them not; if they be elsewhere I will not be more gloomy, if they sparkle around me I will not be more lively than I should otherwise be: whether Fortune comes or goes I will take no notice of her: I will view all lands as though they belong to me, and my own as though they belonged to all mankind: I will so live as to remember that I was born for others, and will thank Nature on this account: for in what fashion could she have done better for me ? She has given me alone to all…