There is a vulgar incredulity, which in historical matters, as well as in those of religion, finds it easier to doubt than to examine.

When a man has not a good reason for doing a thing, he has one good reason for letting it alone.

The half hour between waking and rising has all my life proved propitious to any task which was exercising my invention . . . . It was always when I first opened my eyes that the desired ideas thronged upon me.

To be always intending to live a new life, but never find time to set about it - this is as if a man should put off eating and drinking from one day to another till he be starved and destroyed.

Oh what a tangled web we weave, when first we practice to deceive!