/ http://www.slideshare.net/images/logo.gif / 際際滷Share feed for 際際滷shows by User: dtuul1 https://cdn.slidesharecdn.com/profile-photo-dtuul1-48x48.jpg?cb=1523137402 I hear and I forget. I see and I believe. I do and I understand. Confucius Chinese philosopher & reformer (551 BC - 479 BC)