He who hasn't tasted bitter things hasn't earned sweet things.
Calculus, optimism
A common saying he used in correspondence.
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"Each substance is a world in itself, independent of all others, except by the pre-established harmony."
Strange & Unusual"This interconnection or accommodation of all created things to each other, and each to all the others, brings it about that each simple substance has relations that express all the others, and consequ…"
Philosophical"The mind is not only capable of knowing [innate ideas], but further of finding them in itself; and if it had only the simple capacity to receive knowledge…it would not be the source of necessary truth…"
Philosophical"The present is big with the future."
Strange & Unusual"I do not like X as a symbol for multiplication, as it is easily confounded with x."
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