From the crow one should learn five things: sex in secrecy, secret action, catch in time, unruffled behavior and distrust of everyone.
Just as a pigeon which has live on the holy fig tree is a source of constant danger to the silk cotton tree, so a person who has come after living with the enemy is a source of constant danger.
The mirage looks like water. An enemy can look like a friend.
The enemy can be defeated by a combination of good people.