'Mr Murphy's Grecian Daughter is I think unquestionably the best of all our modern Tragedies, & all its Merit is the Power it has over our Passions too; for nobody I believe ever dreamed of repeating a line on't: Now though to move Terror & Pity those two throbbing Pulses of the Drama, be the first Thing required in a Tragedy; there are others which are necessary to make it complete, as Sentiment Diction &c. 'tis entertaining enough to observe the effect of each style separately - & we shall have Cato and Irene at one End; the Earl of Essex and George Barnwell at the other'.