If in the etymology of the word science (in Latin) is the meaning of knowledge, there is no difference between knowledge and science. So, philosophy is the mother of all knowledge, of all knowledge, of science. What happens is that at a certain moment in history the separation was introduced (but that is a matter of an archaeology of knowledge, as Foucault said). Hence, that people and civilization as wise as the Egyptian was, is largely the cradle of knowledge, and this was astrological, astronomical, calendar, mathematical, alchemical, medicinal, and so on. Good synthesis, @samminator. Thank you.