If an angel were to tell us about his philosophy, I believe many of his statements might well sound like '2 x 2= 13'.

To receive applause for works which do not demand all our powers hinders our advance towards a perfecting of our spirit. It usually means that thereafter we stand still.

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.

Many a man who is willing to be shot for his belief in a miracle would have doubted, had he been present at the miracle itself.

Man is to be found in reason, God in the passions.

It not seldom happens that in the purposeless rovings and wanderings of the imagination we hunt down such game as can be put to use by our purposeful philosophy in its well-ordered household.

Most men of education are more superstitious than they admit - nay, than they think.