That is still a lazy thinker's answer.
There's a reason I consider philosophy to be only marginally less pointless than theology. :)
Philosophy is OK when it comes to morality or ethics, but when it comes to physical reality no philosopher has ever known enough to know what they were talking about, and so should steer clear of it. Unfortunately, they haven't.
Natural philosophy = modern science. The scientists just don't want to be as kooky as Newton anymore.
Natural philosophy is the pre-scientific attempt to combine nature and spirit. It does not equate to modern science.