/ http://www.slideshare.net/images/logo.gif / 際際滷Share feed for 際際滷shows by User: armhelu https://cdn.slidesharecdn.com/profile-photo-armhelu-48x48.jpg?cb=1523447226 There are as many nights as days, and the one is just as long as the other in the year's course. Even a happy life cannot be without a measure of darkness, and the word 'happy' would lose its meaning if it were not balanced by sadness.