‘It seems to me, that if you do not know the answer, or how to proceed to acquire the answer; all you can do is wax philosophical about it.’
as well as....
‘It seems to me that after many centuries of philosophy there has been no gain in knowledge from it, and no answers to the fundamental questions that plague mankind.’
But Science isn't the end all be all. And Philosophy is nice sometimes, because some questions are unanswerable with Science; and those are usually the biggies.
Science can tell us how to get into Space, but not why we would want to go there, or what to do when we get there. That would take some sort of cosmic manifest destiny philosophy.
Or the very human desire to see what is over the next mountain...