And here again we ought to observe that we are called to a knowledge of God: not that knowledge which, content with empty speculation, merely flits in the brain, but that which will be sound and fruitful if we duly perceive it, and if it takes root in the heart. — Institutes, 1.5.9 To study and learn just out of curiosity or a want to know can not be recommended, even if the subject is on the historic faith and or spiritual truths, since the objective is simply to fulfill the lust for knowledge. Likewise, good deeds and various honorable works that we could do, if we do it just because it is a…