Erfindung / Invention Mutter / Mother Notwendigkeit / Necessity
Necessity... the mother of invention.
Mothers are the necessity of invention.
Innovation is a necessity.
Necessity may be the mother of invention, but play is certainly the father.
We should have more invention.
Necessity has the face of a dog.
Necessity dispenseth with decorum.
Literature is a luxury; fiction is a necessity.
Mothers are all slightly insane.