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Letter "H" » Henri Poincare Quotes
«If nature were not beautiful, it would not be worth knowing, and if nature were not worth knowing, life would not be worth living»
«It is far better to foresee even without certainty than not to foresee at all.»
«To doubt everything or to believe everything are two equally convenient solutions; both dispense with the necessity of reflection.»
«The scientist does not study nature because it is useful; he studies it because he delights in it, and he delights in it because it is beautiful.»
«Ideas rose in clouds; I felt them collide until pairs interlocked, so to speak, making a stable combination.»
«Thought is only a flash between two long nights, but this flash is everything»
«Invention consists in avoiding the constructing of useless contraptions and in constructing the useful combinations which are in infinite minority. To invent is to discern, to choose.»
«Thus, be it understood, to demonstrate a theorem, it is neither necessary nor even advantageous to know what it means . . . .»
«Science is built up of facts, as a house is with stones. But a collection of facts is no more a science than a heap of stones is a house.»