For anything so o’erdone is from the purpose of playing, whose end, both at the first and now, was and is to hold, as ’twere, the mirror up to nature, to show virtue her ⟨own⟩ feature, scorn her25 own image, and the very age and body of the time his form and pressure.
this quote to my understanding is talking about giving advice to a payer about bring modest but this part fo the quote sates to not be modest is the same as looking back at yourselkf when you are a great person and instead of appriciating yourself you contstantly scorn yourself instead up until the day to die. that is my understanding of the quote.