Happiness is the condition of a rational being in the world with whom everything goes according to his wish and will; it rests, therefore, on the harmony of physical nature with his whole end and likewise with the essential determining principle of his will.
Zoriona zerizan arrazoidun batek munduan duen egoera bat da, non bere existentziaren osotasunean nahi duen guztia duen, eta beraz, naturak bere xede osoarekin eta era berean bere nahimenaren funtsezko determinazio-oinarriarekin duen adostasunean oinarritzen da.