4 references to "hear":
Thus, though we have heard of stupid haste in war, clevernes... ss. 2.5, Chapter 2: Waging War
to see the sun and moon is no sign of sharp sight; to hear t... ss. 4.10, Chapter 4: Tactical Dispositions
There are not more than five musical notes, yet the combinat... ss. 5.7, Chapter 5: Energy
When an army has penetrated into the heart of a hostile coun... ss. 11.7, Chapter 11: The Nine Situations