“Shakespeare was not of an age, but for all time has been fulfilled” was stated by-

“He was not of an age, but for all time!” exclaimed Ben Johnson in his poem “To the Memory of My Beloved, the Author Mr. William Shakespeare,” one of several dedicatory poems prefacing the great 1623 Folio of Comedies, Histories & Tragedies, the first collected volume of Shakespeare’s works.
Source: Britannica.com