Carry on any enterprise as if all future success depended on it.
To know how to disguise is the knowledge of kings.
If you give me six lines written by the hand of the most honest of men, I will find something in them which will hang him.
Give me six lines written by the most honorable person alive, and I shall find enough in them to condemn them to the gallows.
Secrecy is the first essential in affairs of the State.