What does "the right" mean?
Whoever has so far formed his taste, as to be able to relish and feel the beauties of the great masters, has gone a great way in his study; merely from a conscientiousness of his relish of the right, the mind swells with an inward pride, and is almost as powerfully affected, as if it had itself produced what it admired. Our hearts , frequently warmed in this manner by the contact of those whom we wish to resemble, will undoubtedly catch something of their way of thinking; and we shall receive in our own bosoms some radiation at least of their fire and splendour. That disposition, which is so strong in children, still continues with us, of catching involuntarily the general air and manner of those with whom we are most conversant.
I'd say it means 'that which is right', referring to the great masters and their output.
Ah, as far as I know, only God is right.