Give the speaker of the following quotation and describe what he addresses? ("To be or not to be...")Hamlet by William Shakespeare

This is probably the most famous infinitive in the English
language.  For, to be is the statement of existence.  The famous
line quoted above is from Hamlet's fourth soliloquy in Shakespeare's play. In The Birth
of Tragedy (1873), Nietzsche saw Hamlet not as the man who thinks too much but rather as
the man who thinks too well.

In his soliloquy, Hamlet,
ponders the present, but the personal experiences of the past immerse themselves into
the present as well.  Here Hamlet has the existential experience of all of life as he
looks into the essence of things.  While questioning if he should try to set right what
life has put out of order, Hamlet is almost nauseated.  Thus, in his malaise, he wonders
if it would be better not to be alive in such
disorder:

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Whether 'tis nobler in the mind to
suffer

The slings and arrows of outrageous
fortune,

Or to take arms against a sea of
troubles,

And by opposing end them.  To die, to
sleep--

No more; and by a slepp to say we
end

The heartache, and the thousand natural
shocks...(3.1.56-62)

Hamlet's
question is metaphysical, but it questions deeply the very concept of
existence.