You cannot grow strong through weakness and rich through poverty.
 Martin Luther, Commentary on the Epistle to the Galatians (1535). copy citation

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Author Martin Luther
Source Commentary on the Epistle to the Galatians
Topic weakness poverty
Date 1535
Language English
Reference
Note Translated by Theodore Graebner
Weblink http://www.gutenberg.org/files/1549/1549-h/1549-h.htm

Context

“I and many others have experienced the truth of this. I have known monks who zealously labored to please God for salvation, but the more they labored the more impatient, miserable, uncertain, and fearful they became. What else can you expect? You cannot grow strong through weakness and rich through poverty. People who prefer the Law to the Gospel are like Aesop's dog who let go of the meat to snatch at the shadow of the water. There is no satisfaction in the Law. What satisfaction can there be in collecting laws with which to torment oneself and others?” source