Will is the center or focus of human understanding. We must will to know God, just as we must will in order to possess the life He has given us. The human will must be subdued and trained into the will of God. It is a great power to have a strong will, but a greater power to give that will to God. The will is what we do, the understanding is what we know. Will and understanding must be one in the Cause of God.
(Compilations, Bahá’í Scriptures, p. 502)