يمكن تعريف الغاية بأنها الحياة وفق الطبيعة، أو بعبارة أخرى: وفق طبيعتنا البشرية، وكذلك وفق طبيعة الكون.

“The end may be defined as life in accordance with nature or, in other words, in accordance with our own human nature as well as that of the universe.”Zeno of Citium — Lives of Eminent Philosophers: 'Zeno