Definition & Meaning of "stone-dead hath no fellow"in English

What is the origin of the proverb "stone-dead hath no fellow" and when to use it?

The origin of the proverb "stone-dead hath no fellow" is attributed to Robert Devereux, the 3rd Earl of Essex, who used it during the English Civil War in the early 17th century. The phrase conveys the idea that death is absolute and final, with nothing equal to it in certainty or permanence. It underscores the inescapable nature of death and the fact that no condition or experience can compare to its finality. While the saying highlights the irreversible nature of death, it may also serve as a reminder of life's fragility and the importance of making the most of one's time.