Quote by Stanislav Grof
According to materialistic science, any memory requires a material substrate, such as the neuronal network in the brain or the DNA molecules of the genes.
Summary
This quote suggests that materialistic science argues that in order for memories to exist, they must be dependent on a physical substance, such as the neurons in the brain or the DNA molecules in the genes. This implies that memories are a product of the physical structure or composition of the brain or genes, dismissing any concept of non-physical or metaphysical elements contributing to memory formation or storage.