Calculation of Perils

Soldiers and comrades in this adventure, I hope that none of you in our present strait will think to show his wit by exactly calculating all the perils that encompass us, but that you will rather hasten to close with the enemy, without staying to weigh the odds, seeing in this your best chance of safety. In emergencies like ours calculation is out of place; the sooner the danger is face the better.

-Demosthenes, Thucydides, IV.10