Reading about nature is fine, but if a person walks in the woods and listens carefully, he can learn more than what is in books, for they speak with the voice of God.
The field of space and time is invisible, but in that space and time is the conscious awareness of the mind of the universe. Within it are mystical experience an high loving. The cosmos is being created in its entirety every eco-second. We are working with God in a process of coevolution.