Έκρινα ότι τίποτα γερό δεν μπορούσε να έχει χριστεί πάνω σε τόσο ασταθή θεμέλια - René Descartes

it appears to me that I have discovered many truths more useful and more important than all I had before learned, or even had expected to learn.

Καθώς, όμως, αν γκρεμιστούν τα θεμέλια, ό,τι είναι χτισμένο πάνω σε αυτά καταρρέει μόνο του, θα προσβάλω αμέσως τις αρχές αυτές πάνω στις οποίες στηρίζονταν όλα όσα πίστευα κάποτε.

while I wanted thus to think that everything was false, it necessarily had to be the case that I, who was thinking this, was something. And noticing that this truth — I think, therefore I am — was so firm and so assured that all the most extravagant suppositions of the skeptics were incapable of shaking it, I judged that I could accept it without scruple as the first principle of the philosophy I was seeking.