Imitation of Christ

Qui autem Jesum propter Jesum, et non propter aliquam suam consolationem propriam diligunt, ipsum in tribulatione, et in angustia cordis, sicut in summa consolatione diligunt, et benedicunt. Et si eis consolationem nunquam dare vellet, ipsum tamen laudarent, et semper gratias agere vellent. 

But they who love Jesus for Jesus' sake, and not for any consolation of their own, bless Him in all tribulation and anguish of heart as in the highest consolation. And if He should never give them consolation, nevertheless they would always praise Him and always give Him thanks.

Imitation of Christ, II, 11:2