The question mark (?; also known as an interrogation point, interrogation mark, question point, query or eroteme), is a punctuation mark that replaces the full stop (period) at the end of an interrogative sentence in English and many other languages. The question mark is not used for indirect questions. The question mark character is also often used in place of missing or unknown data.
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Famous quotes containing the words question mark, question and/or mark:
“Why does man freeze to death trying to reach the North Pole? Why does man drive himself to suffer the steam and heat of the Amazon? Why does he stagger his mind with the mathematics of the sky? Once the question mark has arisen in the human brain the answer must be found, if it takes a hundred years. A thousand years.”
—Walter Reisch (1903–1963)
“One cannot come back too often to the question what is knowledge and to the answer knowledge is what one knows.... Knowledge is the thing you know and how can you know more than you do know.”
—Gertrude Stein (1874–1946)
“I am thankful to God for this approval of the people. But while deeply grateful for this mark of their confidence in me, if I know my heart, my gratitude is free from any taint of personal triumph. I do not impugn the motives of any one opposed to me. It is no pleasure to me to triumph over any one.”
—Abraham Lincoln (1809–1865)