a friend in need is a friend indeed.
患难见真情
a hedge between keeps friendship green.
君子之交淡如水。
without a friend,the world is a wilderness.
没有朋友，世界成了荒野。
friendship is like wine—the older the better.
友谊像美酒，越陈越醇厚。
a friend is a second self.
朋友是第二个自我。
a friend is best found in adversity.
患难识真友。