Detailed Instructions: Given a sentence in Tagalog language, translate the sentence to English language keeping the meaning of the original sentence intact.
Q: Tagalog sentence: Siya corresponded sa Klein na Sinabi niya na kung ano ang kailangan ay isang survey, hindi ng isang kumpletong solusyon ng lahat ng mga problema ng mga paksa sa pamamagitan ng Ehrenfest kanyang sarili.
A:
He corresponded with Klein who told him that what was required was a survey, not a complete solution of all the problems of the subject by Ehrenfest himself.