افعلْ وفقَ قاعدةٍ تستطيع في الوقت ذاته أن تريدها أن تصير قانونًا كونيًّا.

“Act only according to that maxim whereby you can at the same time will that it should become a universal law.”Immanuel Kant — Ethical Philosophy: The Complete Texts of Grounding for the Metaphysics of Morals, and Metaphysical Principles of Virtue, Part II of The Metaphysics of Morals, with On a Supposed Right to Lie Because of Philanthropic Concerns (1994)