16

The consummate leader cultivates the moral law, and strictly adheres to method and discipline; thus it is in his power to control success. 

17

In respect of military method, we have, firstly, Measurement; secondly, Estimation of quantity; thirdly, Calculation; fourthly, Balancing of chances; fifthly, Victory. 

18

Measurement owes its existence to Earth; Estimation of quantity to Measurement; Calculation to Estimation of quantity; Balancing of chances to Calculation; and Victory to Balancing of chances.

19

A victorious army opposed to a routed one, is as a pound's weight placed in the scale against a single grain. 

20

The onrush of a conquering force is like the bursting of pent-up waters into a chasm a thousand fathoms deep. 

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