若不轻狂枉少年年少轻狂不知爱
[ruò bù qīng kuáng wăng shăo nián nián shăo qīng kuáng bù zhī ài]
'Without a little madness in youth, we would have wasted our adolescence and might regret not experiencing the recklessness that often accompanies first love.' The phrase conveys nostalgia for the bold, sometimes naive actions and attitudes of young adulthood when the understanding of love is incomplete.