It must not be thought that it is ever possible to reach the interior earth by any perseverance in mining: both because the exterior earth is too thick, in comparison with human strength; and especially because of the intermediate waters, which would gush forth with greater impetus, the deeper the place in which their veins were first opened; and which would drown all miners.
Rene DescartesAn optimist may see a light where there is none, but why must the pessimist always run to blow it out?
Rene DescartesMathematics is a more powerful instrument of knowledge than any other that has been bequeathed to us by human agency.
Rene Descartes