/ http://www.slideshare.net/images/logo.gif / 際際滷Share feed for 際際滷shows by User: joemamokan https://cdn.slidesharecdn.com/profile-photo-joemamokan-48x48.jpg?cb=1661895423 He who knows much about others may be learned, but he who understands himself is more intelligent. He who controls others may be powerful, but he who has mastered himself is mightier still