千变万化的是人心纹丝不动的是命运
[qiān biàn wàn huà de shì rén xīn wén sī bù dòng de shì mìng yùn]
A metaphorical statement suggesting that people’s minds or hearts change constantly while fate remains unmovable and certain. It speaks to the unpredictability of human nature versus the deterministic aspects of life.