In the event any one or more of the provisions contained in this Mortgage should be held invalid, illegal or unenforceable in any respect, such provision shall be enforced to the maximum extent permitted by law and the validity, legality and enforceability of the remaining provisions contained herein shall not in any way be affected or impaired thereby. Mortgagor and Mortgagee shall endeavor in good-faith negotiations to replace the invalid, illegal or unenforceable provisions with valid provisions the economic effect of which comes as close as possible to that of the invalid, illegal or unenforceable provisions.