Mothers are the necessity of invention.
Related:
- Necessity is a mutha.
- Necessity Is The Mother Of Taking Chances!
- Necessity is the mother of strange bedfellows.
- Fact need not be multiplied beyond necessity.
- Marriage makes a life of deception a necessity.
- Polish invention : Colored invisible ink.
- Polish invention : Solar powered flashlights.
- Polish invention : Ejectable helicopter sea
- Polish invention : Braces for false teeth.

