In the heroic drama, great recognitions are not encumbered with these details; and certainly Deronda had as reverential an interest in Mordecai and Mirah as he could have had in the offspring of Agamemnon; but he was caring for destinies still moving in the dim streets of our earthly life, not yet lifted among the constellations, and his task presented itself to him as difficult and delicate, especially in persuading Mordecai to change his abode and habits. 
He thought this task would be difficult and delicate, especially in persuading Mordecai to change his abode.
