The essence of spirituality cannot be localized in either the wisdom of the intellect or the simplicity of the heart, being beyond all these.
It can, however, be reached by the constancy of a struggle to overcome the contradiction.
Indeed, the contradiction itself offers a passage from one world to another.
As one transfers attention from the inwardness of prayer and yearning for the Divine to the outwardness of reason, study, and correct action, one becomes aware of the divine order of things, that everything has its proper place, measure, and time.
–Rabbi Adin Steinsaltz