"路漫漫其修远兮,吾将上下而求索"的英文翻译应何解?

"上下而求索" is from 《离骚》 (writer:屈原 qu yuan；derivation:《li sao》)
The whole sentence is "路曼曼其修远兮，吾将上下而求索".

Means:Although the road is endless and faraway, I still want to pursue the truth in the world.

In this sentence, "上下" means sky and earth.
"求索" means to find and pursue.

Road endless its long and far,I about will seek

there's still long way to go. i'll try to figure out.