Doubt is the father of invention.

IMPROBABILITY, n.His tale he told with a solemn face And a tender, melancholy grace. Improbable 'twas, no doubt, When you came to think it out, But the fascinated crowd Their deep surprise avowed And all with a single voice averred'Twas the most amazing thing they'd heard -- All save one who spake never a word, But sat as mum As if deaf and dumb, Serene, indifferent and unstirred. Then all the others turned to him And scrutinized him limb from limb -- Scanned him alive; But he seemed to thrive And tranquiler grow each minute, As if there were nothing in it."What! what!" cried one, "are you not amazed At what our friend has told?" He raised Soberly then his eyes and gazed In a natural way And proceeded to say, As he crossed his feet on the mantel-shelf:"O no --not at all; I'm a liar myself."

Telephone, n. An invention of the devil which abrogates some of the advantages of making a disagreeable person keep his distance.

Men become civilized, not in proportion to their willingness to believe, but in proportion to their readiness to doubt.

PILGRIM, n. A traveler that is taken seriously. A Pilgrim Father was one who, leaving Europe in 1620 because not permitted to sing psalms through his nose, followed it to Massachusetts, where he could personate God according to the dictates of his conscience.

Who never doubted, never half believed. Where doubt is, there truth is - it is her shadow.