/ http://www.slideshare.net/images/logo.gif / 際際滷Share feed for 際際滷shows by User: jsslon01 https://cdn.slidesharecdn.com/profile-photo-jsslon01-48x48.jpg?cb=1522824277 From the smallest necessity to the highest religious abstraction, from the wheel to the skyscraper, everything we are and everything we have comes from one attribute of man - the function of his reasoning mind. -Ayn Rand