The ancient doctrine that "Life is the cause, and not the consequence of organization,"[348] still maintains its ground against all assaults. Harvey's famous maxim, _Omne vivum ex ovo_--as amended by Charles Robin, _Omne vivum ex vivo_--stands yet unrefuted; and, as Sir William Thomson remarked in his inaugural address before the British Association of Science, "This seems to me as sure a teaching of science as the law of gravitation. I confess to being deeply impressed by the evidence put before us by Professor Huxley, and I am ready to adopt it as an article of scientific faith--true through all space and all time--that _life proceeds from life, and nothing but life_."[349] Life has its origin in no secondary cause, but in the immediate presence and direct action of the Deity. God is the author and giver of Life--the constant sustainer of all vitality; "in Him we live and move and are." The final conclusion to be drawn from these propositions is that God is not simply the _transitive_ but the _immanent_ cause of the universe. He is in nature, not merely as a _regulative_ principle impressing laws upon matter, but as a _constitutive_ principle, the ever-present source and ever-operating cause of all its phenomena. If by the term nature we understand the totality of necessary and uniform phenomena, God is the immediate cause of all uniform and necessary phenomena. If by nature we understand the varied forms of energy which underlie the phenomena, and are manifested in the phenomena, these forms of energy are but various modes in which the omnipresent power of God reveals itself. God is immanent in matter, and his ceaseless energy produces all the phenomena of nature. Nature is more than matter: it is matter swayed by Divine power, and organized and animated by the Divine life.