(exp) (arch) There isn't a moment to be wasted
Every moment is precious
(exp) (id) Make hay while the sun shines
(exp) to make a leap into the dark
to take the plunge
to jump in at the deep end
(exp) good guess
close or accurate guess
(exp) in fooling the enemy first deceive your allies
(exp) if man will not work, he shall not eat
(exp) not exactly correct, but pretty close to it
not far off the mark
(exp) If you know your enemy and know yourself, in a hundred battles you will never be defeated.
(exp) know your enemy, know thyself, and you shall not fear a hundred battles
