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.

Tis by no means the least of life's rules: To let things alone.

He that communicates his secret to another makes himself that other's slave.

There is no need to show your ability before everyone.

Don't take the wrong side of an argument just because your opponent has taken the right side.

One must pass through the circumference of time before arriving at the center of opportunity.

Hope is a great falsifier. Let good judgment keep her in check.