Authors:

There is nothing so subject to the inconstancy of fortune as war.

Miguel de Cervantes Saavedra, Quixote de la Mancha (don, fict.name.) (1847). “The history of don Quixote de la Mancha. From the Span. To which is prefixed a sketch of the life and writings of the author. Select libr. ed”, p.27
There is nothing so subject to the inconstancy of fortune as war.