Substitution Cipher Puzzle

The phrase, "The lady doth protest too much," is a famous line from William Shakespeare's seminal tragedy, Hamlet. It is spoken by Queen Gertrude in Act III, Scene II, during the performance of "The Mousetrap," a play within the play. Gertrude observes the Player Queen making overly impassioned declarations of eternal fidelity to her husband, suggesting that such excessive vows appear insincere. In modern usage, the idiom has evolved to imply that an individual's vehement denial or objection to something may, in fact, indicate the opposite is true, hinting at insincerity or even guilt.

William Shakespeare, born in Stratford-upon-Avon, is widely celebrated as the greatest writer in the English language and the world's pre-eminent dramatist. His profound understanding of human nature and masterful command of language produced numerous plays and sonnets that continue to be studied, performed, and revered centuries after his death. He was a founding member of the Lord Chamberlain's Men, a successful acting company, and accumulated considerable wealth through his work.

This cryptogram employs a substitution cipher, a fundamental and ancient method of encryption. In this type of cipher, each letter in the original message is consistently replaced by a different letter or symbol to obscure the plaintext. The history of substitution ciphers dates back thousands of years, with examples such as the Caesar cipher, famously used by Julius Caesar for military communications. These ciphers represent a foundational element in the long and intriguing history of cryptography, the art of writing and solving codes.