You may safely go to school with hope; but ere you marry, should have learned the mingled lesson of the world: that dolls are stuffed with sawdust, and yet are excellent play-things; that hope and love address themselves to a perfection never realised, and yet, firmly held, become the salt and staff of life; that you yourself are compacted of infirmities, perfect, you might say, in imperfection, and yet you have a something in you lovable and worth preserving; and that, while the mass of mankind lies under this scurvy condemnation, you will scarce find one but, by some generous reading, will become to you a lesson, a model, and a noble spouse through life. So thinking, you will constantly support your own unworthiness, and easily forgive the failings of your friend.

Robert Louis Stevenson (1850-1894) Scottish essayist, novelist, poet

Essay (1881), “Virginibus Puerisque, Part 2”
    (Source)

First published in Virginibus Puerisque and Other Papers, ch. 1, part 2 (1881).