“Einstein taught that the whole material world may be reduced to electromagnetism and gravity. At the end of his life he was seeking a unity above these two, something that would unite electromagnetism and gravity, but he never found it. But what if he had found it? It would only be unity in diversity in relationship to the material world, and as such it would only be child’s play. Nothing would really have been settled because the needed unity and diversity in regard to personality would not have been touched. If he had been able to bring electromagnetism and gravity together, he would not have explained the need of personal unity and diversity.
In contrast, let us think of the Nicene Creed – three Persons, One God. Rejoice that they chose the word “person.” Whether you realize it or not, that catapulated the Nicene Creed right into our century and its discussions: three Persons in existence, loving each other, and in communication with each other, before all else was.
If this were not so, we would have had a God who needed to create in order to love and communicate. In such a case, God would have needed the universe as much as the universe needed God. But God did not need to create; God does not need the universe as the universe needs him. Why? Because we have a full and true Trinity. The Persons of the Trinity communicated with each other, and loved each other before the creation of the world.
This is not only an answer to the acute philosophic need of unity in diversity, but of personal unity and diversity. The unity and diversity cannot exist before God or behind God, because whatever if farthest back is God. But with the doctrine of the Trinity, unity and diversity is God himself – three Persons, yet One God. That is what the Trinity is, and nothing less than that.”
(Schaeffer, He is There and He is Not Silent, 15-16)