Quotation from: The Art of War

Written by: Sunzi (6th cent. B.C.)

for these four are all days of rising wind.
5. In attacking with fire, one should be prepared to meet
five possible developments:
6. (1) When fire breaks out inside to enemy's camp, respond
at once with an attack from without.
7. (2) If there is an outbreak of fire, but the enemy's
soldiers remain quiet, bide your time and do not attack.