The Christian system (what is taught in the whole Bible) is a unity of thought. Christianity is not just a lot of bits and pieces — there is a beginning and an end, a whole system of truth, and this system is the only system that will stand up to all the questions that are presented to us as we face the reality of existence. Some of the other systems answer some of the questions, but leave others unanswered. I believe it is only Christianity that gives the answers to all the crucial questions.
What are those questions? The questions are those which are presented to us as we face the reality of existence. God shuts us up to reality. We cannot escape the reality of what is, no matter what we say we believe or think.
This reality of which I speak falls into two parts: the fact that the universe truly exists and it has a form, and then what I would call the “mannishness” of man — which is my own term for meaning that man is unique. People have certain qualities that must be explained.
God has shut up all people to these things, and I always like to go back to the statement of French philosopher, Jean-Paul Sartre (1905-1980) though he had no answer for his own statement, and that is that the basic philosophic question is that something is there. Things do exist, and this demands an explanation for their existence. I would then go beyond Sartre’s statement to one by Einstein. Einstein said that the most amazing thing about the universe is that we can know something truly about it. In other words, it has a form that is comprehensible, even though we cannot exhaust it. And then I would say beyond that — no matter what people say they are, they are what they are; that is, man is unique as made in the image of God. Any system of thought, to be taken seriously, has to at least try to explain these two great phenomena – the universe and man. In other words, we are talking about objective truth related to reality and not just something within our own heads.
Thoughts developed and/or taken from the works of Dr. Francis A. Schaeffer, Trilogy – The God Who Is There