The Pursuit of Truth is To Be a Child Forever
The pursuit of truth requires us to accept the fact that we don't always know all the answers in our lives, let alone regarding the world around us. This is very similar to when we were younger, because as children we knew that our parents or other adults knew more than us, so we asked question after question. Even for the littlest things, we would still ask questions because everything was new to us. But as we age, many of us have a tendency to be complacent, thinking that we either know enough to get by in life, or that we are not able to learn any thing else. But this is a trap mindset, which entraps us into thinking we somehow have reached a limit of knowledge to gain, or that we know enough. In fact, the amount of things to learn in the world is endless, and the only way to explore the world is to think like we once did as children. When we view the world as an endless source of knowledge, and that we couldn't possibly understand everything there is to understand, then and only then can we truly push the limits of our understanding. Thus to always pursue knowledge and truth is, in essence, to remain a child forever.
This quote is often referenced to Albert Einstein, and fits well with his exploration of the make up of the very atoms that we are made off.