The destruction of the foundations necessarily brings down the whole edifice. - René Descartes

Loosely translated: With me, everything turns into mathematics.

For the mind depends so much on the temperament and disposition of the bodily organs that, if it is possible to find a means of rendering men wiser and cleverer than they have hitherto been, I believe that it is in medicine that it must be sought. It is true that the medicine which is now in vogue contains little of which the utility is remarkable; but, without having any intention of decrying it, I am sure that there is no one, even among those who make its study a profession, who does not confess that all that men know is almost nothing in comparison with what remains to be known; and that we could be free of an infinitude of maladies both of body and mind, and even also possibly of the infirmities of age, if we had sufficient knowledge of their causes, and of all the remedies with which nature has provided us.

Et pour nous, en voyant des choses dans lesquelles, selon certains sens, nous ne remarquons point de limites, nous n’assurerons pas pour cela qu’elles soient infinies, mais nous les estimerons seulement indéfinies