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Sir Arthur Conan Doyle Quote
It is a capital mistake to theorize before one has data.
– Sir Arthur Conan Doyle
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Popular
Browse Popular Topics
Daily Quotes
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Moving On
Life
Education
Change
Motivational
Health
Death
Character
Success
Business
Friendship
Mark Twain
Oscar Wilde
George Washington
Sir Winston Churchill
Albert Einstein
Fyodor Dostoevsky
Woody Allen
Robert Frost