不曾错过的是时光始终错过的是命运
[bù céng cuò guò de shì shí guāng shĭ zhōng cuò guò de shì mìng yùn]
Reflects on the contrast between time, which passes continuously and evenly without missing any moment, versus how personal life or fate can often seem full of missed opportunities, highlighting feelings of regret and nostalgia about choices and events throughout one's journey.