Common integration is only the memory of differentiation.

I am perfectly convinced that I have both seen, and heard in a manner which should make unbelief impossible, things called spiritual which cannot be taken by a rational being to be capable of explanation by imposture, coincidence, or mistake.

Wrong hypotheses, rightly worked from, have produced more useful results than unguided observations.

The Astronomer's Drinking Song Astronomers! What can avail Those who calumniate us; Experiment can never fail With such an apparatus.

Mathematicians care no more for logic than logicians for mathematics.

Common integration is only the memory of differentiation.

My opinion of mankind is founded upon the mournful fact that, so far as I can see, they find within themselves the means of believing in a thousand times as much as there is to believe in.