The key principles of ethics are:

1. Autonomy: Respecting individuals’ freedom to make their own choices.
2. Beneficence: Acting to promote the well-being of others.
3. Non-maleficence: Avoiding harm to others.
4. Justice: Ensuring fairness and equality in treatment.
5. Fidelity: Keeping promises and being trustworthy.

These principles guide ethical decision-making across various contexts.