A book is a mirror: if an ape looks into it an apostle is hardly likely to look out.

When a book and a head collide and a hollow sound is heard, must it always have come from the book?

Some theories are good for nothing except to be argued about.

Perhaps pure reason without heart would never have thought of God.

So-called professional mathematicians have, in their reliance on the relative incapacity of the rest of mankind, acquired for themselves a reputation for profundity very similar to the reputation for sanctity possessed by theologians.

The American who first discovered Columbus made a bad discovery.

People who never have any time on their hands are those who do the least.