The failure of either party to insist upon strict performance of any of the terms or provisions of this Agreement or to exercise any option, right or remedy herein contained, shall not be construed as a waiver or as a relinquishment for the future of such term, provision, option, right or remedy, but the same shall continue and remain in full force and effect. No waiver by either party of any terms or provisions hereof shall be deemed to have been made unless expressed in writing and signed by such party.