Danger is the next neighbour to security.
祸兮福所倚,福兮祸所伏.
Misfortune may be a blessing in disguise.
祸兮福所倚.
No weal without woe.
福兮祸所伏,祸兮福所倚
Luck and Misfortune comes in turn.
祸兮福所倚,福兮祸所伏.(个人比较喜欢这个版本)