As society is now constituted, a literal adherence to the moral precepts scattered throughout the Gospels would mean sudden death.

The consequences of a plethora of half-digested theoretical knowledge are deplorable.

A philosopher of imposing stature doesn't think in a vacuum. Even his most abstract ideas are, to some extent, conditioned by what is or is not known in the time when he lives.

Every epoch has its character determined by the way its population reacts to the material events which they encounter.

Error is the price we pay for progress.

Algebra is the intellectual instrument which has been created for rendering clear the quantitative aspects of the world.

Education with inert ideas is not only useless; it is above all things harmful.