category: mathematics
PHYSICAL MEANING OF GEOMETRICAL PROPOSITIONS BY ALBERT EINSTEIN
It is not difficult to understand why, in spite of this, we feel constrained to call the propositions of geometry “true.” Geometrical ideas correspond to more or less exact objects in nature, and these last
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Hope is the bedrock of this nation. The belief that our destiny will not be written for us, but by us, by all those men and women who are not content to settle for the world as it is, who have the courage to remake the world as it should be.
---Barack Obama
Youth can not know how age thinks and feels. But old men are guilty if they forget what it was to be young.