Read moreIt is far better to foresee even without certainty than not to foresee at all.
Read moreMathematicians do not study objects, but relations between objects.
Read moreScience 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.
Read moreHow is an error possible in mathematics?
Read moreIf nature were not beautiful, it would not be worth knowing, and if nature were not worth knowing, life would not be worth living.