In cryptography, a Caesar cipher, also known as Caesar's cipher, the shift cipher, Caesar's code or Caesar shift, is one of the simplest and most widely known encryption techniques. It is a type of substitution cipher in which each letter in the plaintext is replaced by a letter some fixed number of positions down the alphabet.
This is a sculpture of Julius Caesar (100-44 BC), a prominent figure in the disintegration of the Republic. He became sole-ruler of Rome during a time when Rome had abandoned the idea of Kings and Monarchies and created the idea of a Republic where there is no such thing as a sole-ruler. Because of his defiance he was assassinated by conspirators.