Famous quotes containing the word certainty:
“It takes twenty or so years before a mother can know with any certainty how effective her theories have been—and even then there are surprises. The daily newspapers raise the most frightening questions of all for a mother of sons: Could my once sweet babes ever become violent men? Are my sons really who I think they are?”
—Mary Kay Blakely (20th century)
“It has become a certainty now that if you will only advertise sufficiently you may make a fortune by selling anything.”
—Anthony Trollope (1815–1882)
“Hope is definitely not the same thing as optimism. It is not the conviction that something will turn out well, but the certainty that something makes sense, regardless of how it turns out.”
—Václav Havel (b. 1936)