You shouldn't underestimate an enemy, but it is just as fatal to overestimate him.
Fixed fortifications are a monument to the stupidity of man.
Make your plans to fit the circumstances.
Let us not mourn that such men died, but rejoice that such men lived.
The obvious thing for the cavalryman to do is to accept the fighting machine as a partner, and prepare to meet more fully the demands of future warfare.
All glory is fleeting.