For Baháʼís, entry into the next life has the potential to bring great joy. Bahá'u'lláh likened death to the process of birth. He explains: "The world beyond is as different from this world as this world is different from that of the child while still in the womb of its mother." The analogy to the womb in many ways summarizes the Baháʼí view of earthly existence: just as the womb constitutes an important place for a person's initial physical development, the physical world provides for the development of the individual soul. Accordingly, Baháʼís view life as a preparatory stage, where one can develop and perfect those qualities which will be needed in the next life. The key to spiritual progress is to follow the path outlined by the current Manifestation of God, which Baháʼís believe is currently Bahá'u'lláh. Bahá'u'lláh wrote, "Know thou, of a truth, that if the soul of man hath walked in the ways of God, it will, assuredly return and be gathered to the glory of the Beloved."