Age may have one side, but assuredly Youth has the other. There is nothing more certain than that both are right, except perhaps that both are wrong. Let them agree to differ; for who knows but what agreeing to differ may not be a form of agreement rather than a form of difference?

Robert Louis Stevenson (1850–1894) Scottish essayist, novelist, poet
Essay (1878-03), “Crabbed Age and Youth,” Cornhill Magazine, Vol. 38
    (Source)

Collected in Virginibus Puerisque and Other Papers, ch. 2 (1881)