/ http://www.slideshare.net/images/logo.gif / 際際滷Share feed for 際際滷shows by User: WillyBello https://cdn.slidesharecdn.com/profile-photo-WillyBello-48x48.jpg?cb=1523164108 We enjoy warmth because we have been cold. We appreciate light because we have been in darkness. By the same token, we can experience joy because we have known sorrow.