School divides life into two segments, which are increasingly of comparable length. As much as anything else, schooling implies custodial care for persons who are declared undesirable elsewhere by the simple fact that a school has been built to serve them.
(Ivan Illich (b. 1926), Austrian-born U.S. theologian, author. Celebration of Awareness, ch. 8 (1969).)
Out of life's school of war.What does not destroy me, makes me stronger.
(Friedrich Nietzsche (1844-1900), German philosopher, classical scholar, critic of culture. Friedrich Nietzsche, Sämtliche Werke: Kritische Studienausgabe, vol. 6, p. 60, eds. Giorgio Colli and Mazzino Montinari, Berlin, de Gruyter (1980). Twilight of the Idols, "Maxims and Arrows," section 8 (prepared for publication 1888, published 1889).
A somewhat earlier version appearing in the unpublished "Maxims of a Hyperborean" (13:478) reads: "What does not destroy uswe destroy, and it makes us stronger. Il faut tuer le Wagnerisme" (Wagnerism must be destroyed).)