Rachels argues that there is no moral difference between active and passive euthanasia. He critiques the conventional doctrine that distinguishes between killing and letting die. Through hypothetical scenarios and examples, he shows that intentions and consequences are the same regardless of whether a doctor administers a lethal injection or withdraws life support. The distinction leads to irrelevant factors determining life and death decisions. Ultimately, Rachels believes the priority in any euthanasia case should be relieving a patient's suffering, not moral classifications of actions.