As wisdom without courage is futile, even so faith without hope is nothing worth; for hope endures and overcomes misfortune and evil.
 Martin Luther, Table Talk (1566). copy citation

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Author Martin Luther
Source Table Talk
Topic wisdom courage
Date 1566
Language English
Reference
Note Translated by William Hazlitt
Weblink http://www.ntslibrary.com/PDF%20Books/Luther%20Table%20Talk.pdf

Context

“But hope is the courage and joyfulness in divinity, and pertains to admonition. Faith is the dialectica, for it is altogether prudence and wisdom; hope is the rhetorica, an elevation of the heart and mind. As wisdom without courage is futile, even so faith without hope is nothing worth; for hope endures and overcomes misfortune and evil. And as a joyous valor without understanding is but rashness, so hope without faith is spiritual presumption. Faith is the key to the sacred Scriptures, the right Cabata or exposition, which one receives of tradition, as the prophets left this doctrine to their disciples.” source