Art imitates nature, and necessity is the mother of invention.

It's not like an absolute necessity.

The federal sentencing guidelines should be revised downward. By contrast to the guidelines, I can accept neither the necessity nor the wisdom of federal mandatory minimum sentences. In too many cases, mandatory minimum sentences are unwise and unjust.

To make necessity a virtue (a virtue of necessity). [Lat., Necessitatem in virtutem commutarum.]

The chalice is ephemeral. Jesus' blood eternal.

Necessity is the mother of invention, it is true -- but it's father is creativity, and knowledge is the midwife.