The beauty of Google for quotes - in addition to the obvious one, that you're saving someone else the effort of doing the work for you and getting your answer in seconds - is that you've got search access to primary sources like books and many periodicals. That is important, since the more popular a given quote, the more likely it is that it will be misattributed. We puny humans absolutely cannot be trusted to attribute quotes correctly.

I suppose it's a matter of personal politics whether that all matters more to you than getting an anecdote back like, "I was listening to an old radio show when I heard Winston Churchill intone Great are the stars, and man is of no account to them," or something.