The failure of Landlord or Tenant to insist in any one or more cases upon the strict performance or observance of any of the covenants, agreements or conditions of this Lease or to exercise any option herein contained shall not be construed as a waiver or a relinquishment for the future performance, observance or exercise of such covenant, agreement, condition or option.  No waiver of any default hereunder shall be implied from any omission by Landlord or Tenant to take any action on account of such default, and no condition or covenant shall be deemed waived by Landlord or Tenant unless such waiver is in writing signed by the waiving party.  One or more waivers of any breach of any covenant, term or condition of this Lease by Landlord or Tenant shall not be construed as a waiver of any subsequent breach of the same covenant, term or condition.