Stubborn and ardent clinging to one's opinion is the best proof of stupidity.
Michel de Montaigne

Such discoveries have led me, and other geologists, to reconsider the evidence previously derived from caves brought forward in proof of the high antiquity of Man.
Charles Lyell

Take our own company as an example: We're living proof, we jump with our own parachutes.
Jim Barksdale

That God cannot lie, is no advantage to your argument, because it is no proof that priests can not, or that the Bible does not.
Thomas Paine

That some achieve great success, is proof to all that others can achieve it as well.
Abraham Lincoln

The best proof of love is trust.
Joyce Brothers

The best proof of the high quality of American beef is the continued negative BSE findings supported by the highest surveillance possible. The administration should be working to increase our surveillance of BSE, not scaling it back.
Rosa DeLauro

The burden of proof is now on the Palestinians... They must fight terrorism and dismantle its infrastructures in order to make possible progress on the roadmap.
Kjell Magne Bondevik

The chief contribution of Protestantism to human thought is its massive proof that God is a bore.
H. L. Mencken

The fact that political ideologies are tangible realities is not a proof of their vitally necessary character. The bubonic plague was an extraordinarily powerful social reality, but no one would have regarded it as vitally necessary.
Wilhelm Reich

The final proof of greatness lies in being able to endure criticism without resentment.
Elbert Hubbard

The folly of mistaking a paradox for a discovery, a metaphor for a proof, a torrent of verbiage for a spring of capital truths, and oneself for an oracle, is inborn in us.
Paul Valery

The geysers and hot springs of the Yellowstone are another proof of recent volcanic activity.
Ellsworth Huntington

The great proof of madness is the disproportion of one's designs to one's means.
Napoleon Bonaparte

The highest proof of the spirit is love. Love the eternal thing which can already on earth possess as it really is.
Albert Schweitzer

The highest proof of virtue is to possess boundless power without abusing it.
Thomas Babington

The ideas which now pass for brilliant innovations and advances are in fact mere revivals of ancient errors, and a further proof of the dictum that those who are ignorant of the past are condemned to repeat it.
Henry Hazlitt

The immense popularity of American movies abroad demonstrates that Europe is the unfinished negative of which America is the proof.
Mary McCarthy

The insatiable thirst for everything which lies beyond, and which life reveals, is the most living proof of our immortality.
Charles Baudelaire

The moment a man begins to talk about technique that's proof that he is fresh out of ideas.
Raymond Chandler