From “Heart of Darkness and the Secret Sharer” by Joseph Conrad, page 109: “Let the fool gape and shudder—the man knows, and can look on without a wink. But he must at least be as much of a man as these on the shore. He must meet the truth with his own true stuff—with his own inborn strength. Principles won’t do. Acquisitions, clothes, pretty rags-rags that would fly off at the first good shake. No; you want a deliberate belief.”

In this case, we can imply that truth is more than what we may believe in principle. Technically the truth is that which is acted on in real life. In a sense, truth is action not just belief. Example: we can say we believe that God is real. We could even say that the truth is that God is real. But it is our actions, our actions based on our beliefs that make the truth real.

Inborn strengths and actions make principles concrete and tangible.

Just my thoughts.