Quotation from: The Professor

Written by: Charlotte Bronte

"'I do not think I shall have any further communication with
them; my refusal of their proposals will, I fancy, operate as a
barrier against all future intercourse.'

"'Why,' said he, 'I may as well remind you at the very outset of
our connection, that "no man can serve two masters."
Acquaintance with Lord Tynedale will be incompatible with
assistance from me.' There was a kind of gratuitous menace in
his eye as he looked at me in finishing this observation.