There are two underlying approaches to writing anything with a philosophical basis or concept behind it. Regardless of everything else you do, you must choose to be either explicit or implicit in your writing. However, regardless of which you choose to adopt in your own writing, it is important to recognize and understand the importance of both styles and their respective advantages and disadvantages. I am not going to tell you which one is better for your personal writing; they can both be effective or ineffective equally, but personally, I find myself drawn more towards those writers whose philosophy takes on an implicit form, but that is just me.
Tolkien’s writings (particularly the Lord of the Rings and the Hobbit) are prime examples of the subtle and intricate nature in which Tolkien conveys his philosophy. The connections between his stories and the ‘real world’ are obvious to the reader on a conceptual level, yet difficult to pinpoint in detail. This is precisely what it means to write the implicitly true; Tolkien believed that an implied truth was far more readily accepted by the common reader than an explicit one. He wanted to create a story which was true in its meaning, even if it is untrue in regards to the actual existence of the world and characters that he created. In this way it can be accurately said that all stories are true, even though some of them never happened, for all stories carry truths, both implicitly and explicitly. As to the question of which one is better or which one ought to be chosen for a particular story I am afraid that I cannot begin to answer that for you; yet to speak out of personal preference, I find writings with implicit morals to be much more fascinating because of their heavier reliance on the active engagement of the reader. Anyone who has any inkling of knowledge about Christianity can read the Chronicles of Narnia and make the connections, but without any clear knowledge of Tolkien or the Silmarillion it is easy to conceive of (in part because it happened prior to the publishing of the Silmarillion) someone reading the stories of the Lord of the Rings and the Hobbit without picking up on the subtle Christian truths woven throughout the story which I do not have the time to mention here. Tolkien’s ability to create a world so relatable to our own despite its vast differences is just one attestation to the power and importance of implicit philosophy.
On the other side we have the explicit; perhaps the greatest examples of explicit truths are Aesop’s Fables. These short stories are famous for their practical applications and stated morals. Really any story with an obvious or stated moral to it can be considered explicit; it is the obvious connections to daily life that make it explicit. Similarly, C.S. Lewis’ Chronicles of Narnia are also explicit in their connections to general church theology. Aslan is obviously representative of God and his actions are clearly reminiscent of God’s actions in Christian theology. He dies to save a boy who betrayed Aslan and the boy’s family and was resurrected. Tolkien’s world of Middle Earth does not have any clear correlation to Christian theology on the level that Narnia does and this is one of the reasons for which Tolkien, who as we mentioned before believed that implied truth was more powerful than its explicit counterparts, critiqued Lewis’ writings. He found the truths to be too obvious and too blatant compared to his much more subtle way of expressing similar underlying beliefs. Despite Tolkien’s harsh opinion, I do believe that the explicit is important as well, especially for younger audiences. A child is not going to pick up on the subtleties of Tolkien’s writings whereas they might find the lion Aslan to be a comforting reminder of what they learned in church, or what their parents taught them about right and wrong.