Oliver Wendell Holmes, Jr., United States v. Fidelity Trust Company…
“ The interest of the niece was not a contingent right to income as it should accrue in her lifetime; it was a vested life estate in a fund, changing in investment at the discretion of the trustee, but retaining its equitable identity. Objections like those that are made to treating a life estate as a present unity in the enjoyment of the life tenant might be made to the similar treatment of absolute ownership in fee. In actual life a fee can be enjoyed only minute by minute ”
