the grass is always greener on the other side

(literally) a scentless flower / (literary) Synonym of 雪 (yuki, “snow”) (precipitation)

(fiction) Hanahaki, an illness affecting those consumed by unrequited love that manifests as the coughing up of flowers, which clears up upon reciprocation. A fictional illness, it has found popularity among both Japanese and foreign online fanfic (especially) artists and authors for its poetic quality.

Good things don't last forever. Roses have thorns.

(literally) know the other side and yourself, a hundred battles will not be perilous

very beautiful, said of a woman