Noun

But the false Fox most kindly played his part,

For whatsoever mother-wit or art

Could work he put in proof . No practice sly,

No counterpoint of cunning policy,

No reach, no breach, that might him profit bring.

But he the same did to his purpose wring.

France I more praise and love; you are, my lord,

Yourself for horsemanship much famed; and there

You shall have many proofs to shew your skill.

A given quantity of the spirits was poured upon a quantity of gunpowder in a dish and set on fire. If at the end of the combustion, the gunpowder continued dry enough, it took fire and exploded; but if it had been wetted by the water in the spirits, the flame of the alcohol went out without setting the powder on fire. This was called the proof .

I'll have some proof .

It was a grand sentence of Emanuel Swedenborg, which would alone indicate the greatness of that man's perception, — "It is no proof of a man's understanding to be able to confirm whatever he pleases; but to be able to discern that what is true is true, and that what is false is false, this is the mark and character of intelligence."

Faith, faith is an island in the setting sun

But proof , yes

Proof is the bottom line for everyone

But the chaste damzell, that had never priefe / Of such malengine and fine forgerye, / Did easely beleeve her strong extremitye.

(Shakespeare)