"But I ask, 'security' for what? I think it must be security for the principal, interest, and costs, and, I will add, for any advantages in the nature of increased interest or remuneration on the loan which the mortgagee has validly stipulated for during the continuance of the mortgage. There are two elements in the conception of a mortgage: first, security for money advanced; and, secondly, remuneration for the use of the money. When the mortgage is paid off the security is at an end, and, as the mortgagee is no longer kept out of his money, the remuneration to him for the use of his money is also at an end."
"In my opinion, every yearly or other recurring payment stipulated for by the mortgagee should be held to be in the nature of interest, and no more payable after the principal is paid off than interest could be. I apprehend a man could not stipulate for the continuance of payment of interest after the principal is paid, and I do not think he can stipulate for any other recurring payment such as a share of profits. Any stipulation to that effect would, in my opinion, be a clog or fetter on the equity of redemption."