/ http://www.slideshare.net/images/logo.gif / 際際滷Share feed for 際際滷shows by User: catherinevanderslyen https://cdn.slidesharecdn.com/profile-photo-catherinevanderslyen-48x48.jpg?cb=1523532275 "No pessimist ever discovered the secret of the stars, or sailed to an uncharted land, or opened a new doorway for the human spirit." Helen Keller