Bahá’ís believe that the Universe is a deliberate creation, but that the Creative Force is by definition unknowable. Any created thing is incapable of understanding that which created it. Bahá’u’lláh used a number of terms such as the Unknowable Essence or the Supreme Being to refer to this entity. He also stated that the Universe has always existed, and will always exist. Humans were created, “to carry forward an ever-advancing civilisation”. At the individual level, we were created “to know God and to worship Him”. The purpose of life on earth is to acquire virtues and therefore become nearer to God in this world and the next.