/ http://www.slideshare.net/images/logo.gif / 際際滷Share feed for 際際滷shows by User: YusufHasny https://cdn.slidesharecdn.com/profile-photo-YusufHasny-48x48.jpg?cb=1523040247 i know when i must mad when i must strength and when i must quite. i learn how i become a wise man.