If but as well I other accents borrow
That can my speech diffuse, my good intent
May carry through itself to that full issue
For which I razed my likeness. Now, banished Kent,
If thou canst serve where thou dost stand condemned,
So may it come thy master, whom thou lov’st,
Shall find thee full of labours.

– William Shakespeare

King Lear, Act 1, Scene 4. Kent is no longer servant to his beloved Lear, as he’s been banished, so he comes up with the extraordinary idea of disguising himself as "Caius" so he can still serve his King. The ever loyal Kent still loves his master and believes that if he can disguise his voice as well as his appearance his plan will work perfectly.