All religions, arts and sciences are branches of the same tree.” - Albert Einstein
The most tangible comparison is of the neural network of the brain and the intergalactic network of the cosmos. The human brain weighs about 3 pounds and fits between our ears, whereas the universe is, well, a lot bigger.
Yet despite this contrast in size, when both of these natural structures are mapped out as a series of connections, they look nearly identical (see picture above). You can take this even one step further: while the universe is infinitely larger than the brain, and the brain is infinitely larger than a cell, cells seem to produce the same pattern of complexity!
Via Sakis Koukouvis