He upholds his belief that practical ways of solving problems generate improvement. When this is the case, one must ask: is this really love? Throughout his travels, he adheres to the teachings of his tutor, Pangloss, believing that "all is for the best in the best of all possible worlds.
The reader does not know many particulars about Pangloss other than his optimism, which survives two presumed deaths.
Candide's journey back to Cunegonde become a means for him to emerge from his "self-imposed immaturity. The characters of the story face great adversity.
These two well-known philosophers both held the viewpoint that the world created by God was the best of all possibilities, a world of perfect order and reason.
He has encountered many things.
There is always something more than what it may seem. Voltaire never tries to be politically correct — he tells it like it is or at least tells it like he sees things He is guiltless, optimistic, and authentic to a tremendous degree.