The work of building up Zion is in every sense a practical work; it is not a mere theory. A theoretical religion amounts to very little real good or advantage to any person. To possess an inheritance in Zion or in Jerusalem only in theory—only in imagination—would be the same as having no inheritance at all. It is necessary to get a deed of it, to make an inheritance, practical, substantial and profitable. Then let us not rest contented with a mere theoretical religion, but let it be practical, self-purifying, and self-sustaining, keeping the love of God within us, walking by every precept, by every law, and by every word that is given to lead us to truth, to God, and to life eternal.
– Brigham Young, 2/23/1862