Most clinical ethics dilemmas, however complex, can be reasoned through with four principles — the framework set out by Beauchamp and Childress that has become the common language of medical ethics worldwide. They don't give automatic answers; they give a structured way to think when answers conflict.
1. Autonomy
Respect the patient's right to make their own informed decisions about their care. In practice this is the basis of informed consent and confidentiality: a competent patient may refuse even life-saving treatment, and their information is theirs. Autonomy assumes the patient has capacity and adequate information — which is why how you explain options matters ethically, not just clinically.
2. Beneficence
Act in the patient's best interest — actively do good. This is the positive duty to help, to provide benefit, to promote wellbeing. It's what most people imagine medicine is fundamentally about.
3. Non-maleficence
"First, do no harm." The duty to avoid causing harm, and to weigh the risks of any intervention against its benefits. Beneficence and non-maleficence are two sides of a coin: almost every treatment carries some risk, so the ethical question is rarely "harm or no harm" but "do the benefits justify the risks?"
The principles are equal in standing. The skill of ethics is handling them when they pull in opposite directions.
4. Justice
Fairness — in the distribution of scarce resources, in respect for people's rights, and in compliance with the law. Justice is the principle that pushes beyond the individual patient to the wider population: a treatment decision for one patient can have implications for many when resources are finite.
When they collide
The hard cases are conflicts: a patient autonomously refuses a treatment that beneficence says they need; non-maleficence argues against an aggressive intervention that beneficence favours; justice limits what any one patient can receive. The four-principle approach doesn't rank them by default — it requires you to weigh and justify, transparently, in the specific case.
Go deeper on clinical ethics
My Medical Ethics course works through the four principles, informed consent, confidentiality, and the real dilemmas healthcare professionals face — with the reasoning, not just the rules.
View the Medical Ethics course →Questions
Who created the four-principle framework?
Tom Beauchamp and James Childress, in their work 'Principles of Biomedical Ethics' — it's become the dominant framework in clinical ethics teaching.
Do the principles give definite answers?
No — they're a structured way to reason, not a formula. Their value is forcing you to weigh competing duties explicitly rather than acting on instinct.