What one man can invent another can discover.
Very learned women are to be found in the same manner as female warriors, but they are seldom or ever inventors.[On a vu des femmes très savantes comme il en fut de guerrières ; mais il n’y en a jamais eu d’inventrices.]
I don’t think necessity is the mother of invention – invention, in my opinion, arises directly from idleness, possibly also from laziness. To save oneself trouble.