Rene Descartes — "I am a thinking thing, that is to say a mind, or a soul, or an understanding, or…"
I am a thinking thing, that is to say a mind, or a soul, or an understanding, or a reason.
I am a thinking thing, that is to say a mind, or a soul, or an understanding, or a reason.
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"Our knowledge of the external world is derived from our senses, and our senses are often unreliable."
"The greatest good is to live without pain."
"The reading of all good books is like a conversation with the finest minds of past centuries."
"The nature of the mind is entirely distinct from that of the body."
"I have never made any discoveries that were not based on the certainty of mathematics."
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