We live by information, not by sight.
Many people who pretend to be very busy have the least to do.
No one demands more caution than a spy, and when someone has the skeleton key to minds, counter him by leaving the key of caution inside, on the other side of the keyhole.
Self-reflection is the school of wisdom.
Cunning grows in deceit at seeing itself discovered, and tries to deceive with truth itselft.
It takes more to make one sage today than it did to make the seven of Greece. And you need more resources to deal with a single person these days than with an entire nation in times past.