N2 — outside your level filter
write + (and…) + only by doing X
kaite koso
only by doing X; it's precisely by doing X that Y follows
meaning: only by writing
頑張ってこそ、結果が出るんだ。
ganbatte koso, kekka ga deru n da.
Real results come only by trying hard. casual
挑戦してこそ、新しい道が開ける。
chousen shite koso, atarashii michi ga hirakeru.
It's only by taking on challenges that new paths open up. neutral