The most powerful weapon on earth is the human soul on fire. - Ferdinand Foch

The military art is not an accomplishment, an art for dilettante, a sport. You do not make war without reason, without an object, as you would give yourself up to music, painting, hunting, lawn tennis, where there is no great harm done whether you stop altogether or go on, whether you do little or much. Everything in war is linked together, is mutually interdependent, mutually interpenetrating. When you are at war you have no power to act at random. Each operation has a raison d'etre, that is an object; that object, once determined, fixes the nature and the value of the means to be resorted to as well as the use which ought to be made of the forces.

I bluntly remarked to M. Klotz, the Finance Minister: ‘With the treaty you have just signed, sir, you can expect with certainty to be paid in monkey tricks.’

[T]he treaty [of Versailles]...provided for a fifteen-year occupation of the Rhineland, with retreats every five years. Such a guarantee, I said without mincing my words, was ‘from the military point of view, null; it will merely be an increase of work for the Allied occupation.’ I went on to say that whereas the treaty was non-existent as promoter of our security, it was distinctly bad for reparations. ... I asked who would be judge of the situation if we sought to reoccupy the Rhineland because of an infringement of terms by Germany. The Commission for Reparations would not suffice, I said. It cannot be denied that I was right on this point.