More quotes by René Descartes

"Let whoever can do so deceive me, he will never bring it about that I am nothing, so long as I continue to think I am something."
"The reading of all good books is like conversation with the finest men of past centuries."
"To live without philosophizing is in truth the same as keeping the eyes closed without attempting to open them."
"But in my opinion, all things in nature occur mathematically."
"If you would be a real seeker after truth, it is necessary that at least once in your life you doubt, as far as possible, all things."