/ http://www.slideshare.net/images/logo.gif / 際際滷Share feed for 際際滷shows by User: nicolearondus https://cdn.slidesharecdn.com/profile-photo-nicolearondus-48x48.jpg?cb=1523399088 "I am, I exist, that is certain... Just when I think; for it might possibly be the case if I ceased to think, that I should likewise cease to exist" Descartes.