I have never yet met anyone who did not think it was an agreeable sensation to cut tinfoil with scissors.

Even truth needs to be clad in new garments if it is to appeal to a new age.

Many intelligent people, when about to write . . . , force on their minds a certain notion about style, just as they screw up their faces when they sit for their portraits.

Erudition can produce foliage without bearing fruit.

To make a vow is a greater sin than to break one.

The great trick of regarding small departures from the truth as the truth itself - on which is founded the entire integral calculus - is also the basis of our witty speculations, where the whole thing would often collapse if we considered the departures with philosophical rigour.

The construction of the universe is certainly very much easier to explain than is that of the plant.