the question of knowledge

What is Knowledge?
Knowledge is establishing a relation with that which is beyond me. When I look around and see the running water I desire to know its source, its path and its ultimate end. The night sky with millions of statrs and a cresent moon, makes me curious and I want to know how they hang out there but I cant? Who lights up the little lamps and who puts them off when the sun appears? The path of the sun seems fixed but who did it? It was not difficult for our early ancestors to experience a pattern in the workings of all that he was surrounded by, his environment. The winter snow melting into soft green grass of spring, little shoots and buds changing slowly but surely into leaves ,flowers and fruits, then falling away in autumn, all this aroused that little part of man 'rationality' . This was his special trait, which drew a thin line between him and the beast who could not enjoy the pink dawn or oopaque twilight. Philosophy came naturally to man. He started to philosophise long before he developed a religion. But how do we know?