May 12

…after this universal war, the people have obtained extraordinary capacity to hearken to the divine teachings, for the wisdom of this war is this: That it may become proven to all that the fire of war is world-consuming, whereas the rays of peace are world-enlightening. One is death, the other is life; this is extinction, that is immortality; one is the most great calamity, the other is the most great bounty; this is darkness, that is light; this is eternal humiliation and that is everlasting glory; one is the destroyer of the foundation of man, the other is the founder of the prosperity of the human race. 
(‘Abdu’l-Baha, ‘Tablets of the Divine Plan’)