Κυρίως μου άρεσαν τα μαθηματικά, για τη βεβαιότητα και το προφανές της τεκμηρίωσης τους όμως εξακολουθούσα να μην αντιλαμβάνομαι καθόλουτη πραγματική… - René Descartes
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Κυρίως μου άρεσαν τα μαθηματικά, για τη βεβαιότητα και το προφανές της τεκμηρίωσης τους όμως εξακολουθούσα να μην αντιλαμβάνομαι καθόλουτη πραγματική χρησιμότητα τος και, θεωρώντας ότι δεν χρησίμευαν παρά μόνο στις μηχανικές τέχνες.
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About
René Descartes
René Descartes (March 31, 1596 – February 11, 1650) was a highly influential French philosopher, mathematician, physicist and writer. He is known for his influential arguments for substance dualism, where mind and body are considered to have distinct essences, one being characterized by thought, the other by spatial extension. He has been dubbed the "Father of Modern Philosophy" and the "Father of Modern Mathematics." He is also known as Cartesius.
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Wikimedia Commons, After Frans Hals (Public domain / CC0)
But immediately upon this I observed that, whilst I thus wished to think that all was false, it was absolutely necessary that I, who thus thought, should be somewhat; and as I observed that this truth, I think, therefore I am (cogito ergo sum), was so certain and of such evidence that no ground of doubt, however extravagant, could be alleged by the sceptics capable of shaking it, I concluded that I might, without scruple, accept it as the first principle of the philosophy of which I was in search … I thence concluded that I was a substance whose whole essence or nature consists only in thinking, and which, that it may exist, has need of no place, nor is dependent on any material thing; so that ‘I’, that is to say, the mind by which I am what I am, is wholly distinct from the body, and is even more easily known than the latter …
On the other hand, when too much time is occupied in traveling, we become strangers to our native country; and the over curious in the customs of the past are generally ignorant of those of the present.
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I would like those who are not at all versed in anatomy to take the trouble, before reading this, to have the heart of some large animal that has lungs dissected in their presence (for such a heart is in all respects sufficiently similar to that of a man), and to be shown the two chambers or cavities that are in it.
