Charles Dill proposes that Rameau had composed the 1737 opera just after working with Voltaire on the opera "Samson" that was never completed, after which he composed "Castor et Pollux" implementing Voltaire's aesthetics.
While some scholars (such as Cuthbert Girdlestone, Paul-Marie Masson, and Graham Sadler) have assumed that the 1754 version was superior, Dill argues that Rameau made the changes of 1754 at a different point in his career.