/ http://www.slideshare.net/images/logo.gif / 際際滷Share feed for 際際滷shows by User: DoanLinh2 https://cdn.slidesharecdn.com/profile-photo-DoanLinh2-48x48.jpg?cb=1523198531 Knowledge is power. - The wealth of the mind is the only true wealth. - Wisdom is better than rubies. - Investment in knowledge pays the best interest. - A learned man has always wealth within himself. Y!M:pretty_girl2703