Memento Mori in Shakespeare

The more I think about it, the more I see how rich and complex the issues of death are in "Hamlet." From dealing with the murder and the ghost of his father; to losing Ophelia; to agonizing over his desires for revenge; and, in the end, to accepting fatalistically the fact of his mortality.  

There's a lot to memento mori.  To wit: Shakespeare on Show: Top Ten Exhibition – memento mori seal.

Seal Impression from ‘Top Ten Characters’ exhibition at Nash’s House

This seal impression dates from the reign of Queen Elizabeth I (1558-1603) and bears the impression of a skull surrounded by a legend which states ‘N.R. MEMENTO MORI’ (‘remember that you will die’). 

The seal bearing the impression of a skull does not necessarily indicate status, but rather a philosophical perspective of life. Seals bearing the motto ‘Memento Mori’ were commonly used in Tudor England to remind people of their fragile mortality and to encourage them to pray and to be more pious; the idea strongly emphasises the Christian concept of divine judgement.

From the Folger Shakespeare Library

It is appointed for all Men once to die,
Therefore think upon Eternity.

And as I am so must you be,
Therefore prepare to follow me.