Answer:
This is an excerpt form William Shakespeare's Hamlet. This lines are uttered by Hamlet himself.
Explanation:
Here is a more modern version (in bold):
I am myself indifferent honest/ I’m fairly good myself,
but yet I could accuse me of such things that it/but even so I could accuse myself of such horrible crimes that it
were better my mother had not borne me:/ would’ve been better if my mother had never given birth to me.
I am very proud, revengeful, ambitious, with more offences/I am arrogant, vengeful, ambitious, with more ill will in me
at my beck than I have thoughts to put /than I can fit into my thoughts,
them in, imagination to give them shape, or time to / and more than I have time
act them in/ to carry it out in.
