/ http://www.slideshare.net/images/logo.gif / 際際滷Share feed for 際際滷shows by User: namendez1 https://cdn.slidesharecdn.com/profile-photo-namendez1-48x48.jpg?cb=1528652285 "In philoshophy, or religion, or ethics, or politics, two and two might make five, but when one was designing a gun or an aeroplane they had to make four"