By necessity, by proclivity, and by delight, we all quote. In fact it is as difficult to appropriate the thoughts of others as it is to invent.

Make yourself necessary to somebody.

Necessity has no law.

Necessity is blind until it becomes conscious. Freedom is the consciousness of necessity.

Necessity is stronger far than art.

Necessity is the mother of invention.

Necessity knows no law except to conquer.

Necessity never made a good bargain.

No, rather I abjure all roofs, and choose To wage against the emnity o' th' air, To be a comrade with the wolf and owl, Necessity's sharp pinch.

Nothing has more strength than dire necessity.