Henri Poincare Quotes | There are no solved problems; there are only ...

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

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We can never be certain of our courage until we have faced danger.

— Francois de La Rochefoucauld

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Mathematical science is in my opinion an indivisible whole, an organism whose vitality is conditioned upon the connection of its parts.

— David Hilbert

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