The etymology

[Lady Moon]

I want to know the etymology of the proverb, " where there's a will there's a way" Could you tell me where it is from, Thanks a lot

[Mister Micawber]

.
A proverb is a folk saying handed down from generation to generation, so I doubt that an identifiable source for your proverb exists. It does appear in both Arabic and Swahili, so has probably been transported about a good bit over the decades. Or, human nature is the same around the world.
.
.