法華を識る者は世法を得可きか - when one knows the Lotus Sutra, one understands the meaning of all worldly affairs.

本文
天晴れぬれば 地 明かなり 法華を識る者は 世法を得可きか

観心本尊抄
［如来滅後五五百歳始観心本尊抄］
（２５４頁）
文永１０年４月
（１２７２年）

通解（意訳）
天が晴れるならば、大地は自ら明らかとなる。法華経を知る者は、世の中の道理と仏法の法理がかけ離れていないこと（仏法即社会）を、自ら明らかに知ることができて、自身の使命を果たし、実証を示すことに目覚めることができるであろう。

English Gosho
 When the skies are clear, the ground is illuminated. Similarly, when one knows the Lotus Sutra, one understands the meaning of all worldly affairs.

" The Object of Devotion for Observing the Mind
 Established in the Fifth Five-Hundred-Year
 Period  after the Thus Come One’s Passing "
"The Writings of Nichiren Daishonin", Vol.1, p. 376
April, 1272.
[ --- ] is liberal translation.

Interpretation (liberal translation)
When the sky clears up, the earth becomes light.
When one knows Lotus Sutra, it's possible to find a principle of Law of Buddhism not distant from the reason of the world personally clearly, and the mission is achieved, and in the same way, it would be possible to wake up to indicate proof.

参考文献：
「日蓮大聖人御書全集」
「御書をひもとく」
「英語で学ぶ御書」
第三文明社
Bibliography :
"The Writings of Nichiren Daishonin"
"The Record of The Orally Transmitted Teachings"