He who hid well, lived well. - René Descartes

Καλό είναι να έχουμε εξετάσει όλες τις επιστήμες, ακόμα και εκείνες με τις περισσότερες προλήψεις και τα πιο πολλά σφάλματα, έτσι ώστε να μάθουμε ακριβώς τι αξίζουν και να μη μας εξαπατήσουν

Common sense is the most widely shared commodity in the world, for every man is convinced that he is well supplied with it.

Whence then come my errors? They come from the sole fact that since the will is much wider in its range and compass than the understanding, I do not restrain it within the same bounds, but extend it also to things which I do not understand: and as the will is of itself indifferent to these, it easily falls into error and sin, and chooses the evil for the good, or the false for the true.