there is another world but it is in this one - Google Search

The imagination is not a state: it is the human existence itself.
William Blake
A Letter From the Young William Blake in Defense of the Imagination

There is no reality except the one contained within us. That is why so many people live such an unreal life. They take the images outside them for reality and never allow the world within the body and mind to reveal itself. —Herman Hesse
Jack Kornfield • The Wise Heart: A Guide to the Universal Teachings of Buddhist Psychology
“Although there are an infinite number of realities, there are only two worlds: the Spiritual and the Material. The answer you seek is found when the two worlds become ONE.”
Sydney Banks • In Quest of the Pearl
“There’s another world that parallels our own, and to a certain degree you’re able to step into that other world and come back safely. As long as you’re careful. But go past a certain point and you’ll lose the path out. It’s a labyrinth. Do you know where the idea of a labyrinth first came from?” I shake
Haruki Murakami • Kafka on the Shore
“That’s right. A reciprocal metaphor. Things outside you are projections of what’s inside you, and what’s inside you is a projection of what’s outside. So when you step into the labyrinth outside you, at the same time you’re stepping into the labyrinth inside. Most definitely a risky business.”
Haruki Murakami • Kafka on the Shore
In other words, the physical world isn’t the only real reality.