This is very likely the best explanation for why a Christian who truly understands the centrality of Christ is a generous reader. At once we prize Scripture above all books, and in prizing Scripture above all books we are properly postured to read all other other books with discernment and appreciation.
The following quote is taken from Herman Bavinck’s outstanding book Our Reasonable Faith (Eerdmans, 1956), pages 36–38, 44. If you don’t have it, it’s worth owning, and I think page-for-page it’s Bavinck’s most valuable work (though it’s not cheap).
The quote is worth quoting at length and is worth reading slowly.
It is not the sparkling firmament, nor mighty nature, nor any prince or genius of the earth, nor any philosopher or artist, but the Son of man that is the highest revelation of God. Christ is the Word become flesh, which in the beginning was with God and which was God, the Only-Begotten of the Father, the Image of God, the brightness of His glory and the express image of His person; who has seen Him has seen the Father (John 14:9). In that faith the Christian stands. He has learned to know God in the person of Jesus Christ whom God has sent. God Himself, who said that the light should shine out of the darkness, is the One who has shined in His heart in order to give the light of the knowledge of the glory of God in the face of Jesus Christ (2 Cor. 4:6).
But from this high vantage point the Christian looks around him, forwards, backwards, and to all sides. And if, in doing so, in the light of the knowledge of God, which he owes to Christ, he lets his eyes linger on nature and on history, on heaven and on earth, then he discovers traces everywhere of that same God whom he has learned to know and to worship in Christ as his Father. The Sun of righteousness opens up a wonderful vista to him which stretches out to the ends of the earth. By its light he sees backwards into the night of past times, and by it he penetrates through to the future of all things. Ahead of him and behind the horizon is clear, even though the sky is often obscured by clouds.
The Christian, who sees everything in the light of the Word of God, is anything but narrow in his view. He is generous in heart and mind. He looks over the whole earth and reckons it all his own, because he is Christ’s and Christ is God’s (1 Cor. 3:21–23). He cannot let go his belief that the revelation of God in Christ, to which he owes his life and salvation, has a special character. This belief does not exclude him from the world, but rather puts him in position to trace out the revelation of God in nature and history, and puts the means at his disposal by which he can recognize the true and the good and the beautiful and separate them from the false and sinful alloys of men.
So it is that he makes a distinction between a general and a special revelation of God. In the general revelation God makes use of the usual run of phenomena and the usual course of events; in the special revelation He often employs unusual means, appearances, prophecy, and miracles to make Himself known to man. The contents of the first kind are especially the attributes of power, wisdom, and goodness; those of the second kind are especially God’s holiness and righteousness, compassion and grace. The first is directed to all men and, by means of common grace, serves to restrain the eruption of sin; the second comes to all those who live under the Gospel and has as its glory, by special grace, the forgiveness of sins and the renewal of life.
But, however essentially the two are to be distinguished, they are also intimately connected with each other. Both have their origin in God, in His sovereign goodness and favor. The general revelation is owing to the Word which was with God in the beginning, which made all things, which shone as a light in the darkness and lighteth every man that cometh into the world (John 1:1–9). The special revelation is owing to that same Word, as it was made flesh in Christ, and is now full of grace and truth (John 1:14). Grace is the content of both revelations, common in the first, special in the second, but in such a way that the one is indispensable for the other. …
In determining the value of general revelation, one runs the great danger either of over-estimating or of under-estimating it. When we have our attention fixed upon the richness of the grace which God has given in His special revelation, we sometimes become so enamored of it that the general revelation loses its whole significance and worth for us. And when, at another time, we reflect on the good, and true, and beautiful that is to be found by virtue of God’s general revelation in nature and in the human world [e.g. on the shelves at Barnes & Noble], then it can happen that the special grace, manifested to us in the person and work of Christ, loses its glory and appeal for the eye of our soul.
This danger, to stray off either to the right or to the left, has always existed in the Christian church, and, each in turn, the general and the special revelation, have been ignored or denied. Each in turn has been denied in theory and no less strongly in practice. … We must be on guard against both of these one-sidednesses; and we shall be best advised if, in the light of Holy Scripture, we take a look at the history of mankind and let it teach us what people owe to general revelation.