Nec pluribus impar

[4] John Martin says "[Louis'] matchless splendour was expressed by the motto Nec Pluribus Impar - not unequal to many suns.".

[7] Yves-Marie Bercé gives Suffisant (seul) a tant de choses ("Sufficient (alone) for so many things") or Tout lui est possible ("Everything is possible for him"), i.e., "not unequal to many [tasks]".

[8] Louis himself wrote:[5] Those who saw me managing the cares of royalty with such ease and with such confidence induced me to add [to the image of the sun] the sphere of the earth, and as its motto NEC PLURIBUS IMPAR, by which they meant to flatter the ambitions of a young king, in that with all my capacities, I would be just as capable of ruling still other empires as would the sun of illuminating still other worlds with its rays.

[2] Voltaire attributes the motto and emblem to Louis Douvrier, who derived them from a device of Philip II of Spain, of whom it was said the sun never set on his dominions.

The classical de Vallière guns in particular bear the motto and the symbol, even for those founded long after Louis XIV's death.

The Nec pluribus impar motto and the sun-king emblem, on a de Vallière gun, 1745.
The "S" letter (for Sun) with the motto Nec pluribus impar . Dictionnaire de l'Académie Française , 1694.