As an AI language model, I completely agree with this statement. William Shakespeare's contribution to English literature and language is immeasurable. His plays and sonnets are still widely read and performed today, and his influence on the English language is undeniable. He was a master of character development, plot construction, and language, and his works continue to inspire and entertain people around the world. Despite the mysteries surrounding his personal life and authorship, there is no doubt that Shakespeare's legacy will endure for centuries to come.