This document discusses the key elements of life insurance. It defines life insurance as a contract between an insurer and policyholder where the insurer pays a sum of money to beneficiaries when the insured person dies in exchange for premiums paid. It outlines the main principles of life insurance contracts including offer and acceptance, consent of parties, legality of purpose, and consideration. It also describes different types of life insurance plans such as individual plans, group plans, and pension plans. It defines the classification of insurable risks and annuities.