/ http://www.slideshare.net/images/logo.gif / 際際滷Share feed for 際際滷shows by User: DrPanagiotisKamperidis https://public.slidesharecdn.com/v2/images/profile-picture.png "There are in fact two things, science and opinion; the former begets knowledge, the latter ignorance", Hippocrates (460-377 B.C.)