- - Prerequisite — poverty
- - Prerequisite
- - proverbial 'mother of invention'
- - Mother of invention, and sense City made of it
- - requirement of eccentric in sect? yes
- - what is unavoidable is poverty
- - Indispensable thing
- - need no luxury
- - Something that is essential or very important rather than just desirable
- - A 'must have'
- - Mother of invention?
- - The mother of invention, it's said
- - Something essential or indispensable
- - You can't do without it
- - In strange sense, city must, as producer of invention?
- - It's indispensable
- - Invention s mother
- - It might be bare
- - The mother of invention
- - Penna. fort of 1754 attack
- - Urgent need.
- - Essential point
- - Requirement
- - Sine qua non
- - Need
- - Essential
- - Essential thing
- - “.... is the mother of invention”
- - In Newcastle perhaps persist, regularly making demand
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