Henri Poincare Quotes About Certainty

Quotes about: Certainty

• There are no solved problems; there are only problems that are more or less solved.

  Henri Poincare

  Knowledge, Math, Ontology

• I then began to study arithmetical questions without any great apparent result, and without suspecting that they could have the least connexion with my previous researches. Disgusted at my want of success, I went away to spend a few days at the seaside, and thought of entirely different things. One day, as I was walking on the cliff, the idea came to me, again with the same characteristics of conciseness, suddenness, and immediate certainty, that arithmetical transformations of indefinite ternary quadratic forms are identical with those of non-Euclidian geometry.

  Henri Poincare

  Success, Science, Ideas

  Henri Poincare (2012). “The Value of Science: Essential Writings of Henri Poincare”, p.649, Modern Library

• A first fact should surprise us, or rather would surprise us if we were not used to it. How does it happen there are people who do not understand mathematics? If mathematics invokes only the rules of logic, such as are accepted by all normal minds...how does it come about that so many persons are here refractory?

  Henri Poincare

  People, Mind, Ontology

• It is far better to foresee even without certainty than not to foresee at all.

  Henri Poincare

  Absolute Certainty, Certainty, Foreseeing

  The Foundations of Science Science and Hypothesis (p. 129)

• Experiment is the sole source of truth. It alone can teach us something new; it alone can give us certainty.

  Henri Poincare

  Truth, Teaching, Science

  The Foundations of Science Science and Hypothesis (p. 127)

• facebook
• twitter
• googleplus
• email
• linkedin

• facebook
• twitter
• googleplus
• email
• linkedin