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Symmetry is often thought of as two or more identical parts. In fact, the parts
do not have to be exact copies. Such is the case of the human face. The symmetry in a face is that each part corresponds to
the other such as two eyes, a nose, and a mouth corresponding to the human notion that this is the way faces look like. A
human face can be imagined to be divided by a vertical line that passses over the bridge of the nose, each half being more
or less symmetrically identical to the other. However, no face is divided into two exact halves.
The closer the resemblance of the two halves of a face are to each other, the more likely
the face is thought to be beautiful. Exact symmetry seems to be considered perfection. The book Symmetry says:
"The flower or animal with symmetry is sending out a very clear signal of its genetic superiority...
Humans and animals alike will choose a face that has pefect left-right mirror symmetry over assymetry" (Du Sautoy, 12).
In Riders to The Sea, Maurya seems to believe in two worlds, the real
world and the spirit world. They were considered to be seperated invisibly most of the time. However, as in the
case of the festival of Samhain, there were times when the invisible barrier that seperated these two worlds was thought to
dissolve so that beings and communication could pass between the two.
Hermeticism
The human brain is divided into two parts, the left and right hemispheres. The
are connected by the corpus collusum. Information passes from one hemisphere of the brain to the other through the corpus
callosum, uniting them into what people consider one mind.
Corpus Callosum
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