Compound interest is proof of gods existence.
There is no conclusive proof of Unidentified Flying Objects flying over India-China border.
Being-alone is a deficient mode of being-with; its possibility is a proof for the latter.
Fear is proof of a degenerate mind.
The great proof of madness is the disproportion of one's designs to one's means.
To cease to admire is a proof of deterioration.
Faith is not uprooted by dialectic proof; it must already be deeply shaken by other causes to be unable to withstand the shock of argument.
I can assure you I'm quite sane and have proof that dialog 'works.'
Anything that won't sell, I don't want to invent. Its sale is proof of utility, and utility is success.
Life begins at 40, and I'm living proof.
Is it unreasonable to have proof of citizenship when entering another country?
The geysers and hot springs of the Yellowstone are another proof of recent volcanic activity.
