140 Quotes by Henri Poincare

Physicists believe that the Gaussian law has been proved in mathematics while mathematicians think that it was experimentally established in physics.

If we wish to foresee the future of mathematics, our proper course is to study the history and present condition of the science.

Mathematics is the art of giving the same name to different things.

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

The American public is therefore much better prepared than has been thought for investigating the origin of the notion of space.

The geometric language is after all only a language. Space is only a word that we have believed a thing.

Douter de tout ou tout croire, ce sont deux solutions également commodes, qui l’une et l’autre nous dispensent de réfléchir.

But for harmony beautiful to contemplate, science would not be worth following.

Experiment is the sole source of truth.