An argument deduced from impossibility greatly avails in law.

Explanation

If a proposed construction of law would require the impossible, the construction must be rejected — the law never demands what cannot be done.

Where this applies

• Their reading of the law would require something impossible to be done.
• The law never demands the impossible — if it can't be done, the interpretation is wrong.
• An argument from impossibility is one of the strongest in law.

See also

• 2.1.11 The end of a thing is to be attended to.
• 12.6.3 Necessity makes that lawful which otherwise is not lawful.