The full force of love ...

He who loves God both believes truly and performs the works of faith reverently. But he who only believes and does not love, lacks even the faith he thinks he has; for he believes merely with a certain superficiality of intellect and is not energized by the full force of love's glory. The chief part of virtue, then, is faith energized by love.

From St. Gregory Palamas (The Philokalia Vol. 4; Faber and Faber pg. 308):

 

…the passion for popularity brings such injury upon those it masters that it shipwrecks faith itself. Our Lord confirms this when He says, “How can you have faith in Me when you receive honour from one another and do not seek for the honour that comes from the only God?” (cf. Jn. 5:44).