"On hearing the news [of being awarded a Nobel Prize], a friend who knows me only too well, sent me this laconic message: 'Blood, toil, sweat and tears always were a good mixture'."

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Observation by means of the microscope will reveal more wonderful things than those viewed in regard to mere structure and connection: for while the heart is still beating the contrary (i.e., in opposite directions in the different vessels) movement of the blood is observed in the vessels-though with difficulty-so that the circulation of the blood is clearly exposed.

— Marcello Malpighi