For my part I know nothing with any certainty, but the sight of the stars makes me dream. Vincent Van Gogh
Persuasion is achieved by the speaker's personal character when the speech is so spoken as to make us think him credible. We believe good men more fully and more readily than others: this is true generally whatever the question is, and absolutely true where exact certainty is impossible and opinions are divided. Aristotle
In spite of the opinions of certain narrow-minded people, who would shut up the human race upon this globe, as within some magic circle it must never outstep, we shall one day travel to the moon, the planets, and the stars, with the same facility, rapidity, and certainty as we now make the voyage from Liverpool to New York! Jules Verne
Benjamin Franklin said there were only two things certain in life: death and taxes. But I'd like to add a third certainty: trash. And while some in this room might want to discuss reducing taxes, I want to talk about reducing trash. Ruth Ann Minner
The language of judicial decision is mainly the language of logic. And the logical method and form flatter that longing for certainty and for repose which is in every human mind. But certainty generally is illusion, and repose is not the destiny of man. Oliver Wendell Holmes, Jr.