Nothing can be more incorrect than the assumption one sometimes meets with, that physics has one method, chemistry another, and biology a third.

Economy does not lie in sparing money, but in spending it wisely.

For every man the world is as fresh as it was at the first day, and as full of untold novelties for him who has the eyes to see them.

Mathematics may be compared to a mill of exquisite workmanship, which grinds your stuff to any degree of fineness.

The most considerable difference I note among men is not in their readiness to fall into error, but in their readiness to acknowledge these inevitable lapses.

I am too much of a sceptic to deny the possibility of anything especially as I am now so much occupied with theology but I don't see my way to your conclusion.

All knowledge is good. It is impossible to say any fragment of knowledge, however insignificant or remote from one's ordinary pursuits, may not some day be turned to account.