It is not who is right, but what is right, that is of importance.

Science is nothing but trained and organized common sense.

The world makes up for all its follies and injustices by being damnably sentimental.

The great end of life is not knowledge but action.

To us, the moment 8:17 A.M. means something - something very important, if it happens to be the starting time of our daily train. To our ancestors, such an odd eccentric instant was without significance - did not even exist. In inventing the locomotive, Watt and Stevenson were part inventors of time.

Chastity: the most unnatural of the sexual perversions.