Abstract
As an approach in searching for a universal concept of information, Part 1 compares genetic information system with linguistic information system. The genetic information system was very highly analogous to the language system. The word, DNA language, is often used in this sense. The genetic system must have evolved much higher than the linguistic system.
Part 2 describes an idea of quantifying semantic information based on brain nervous system. Strong correlations are found among matter, energy, and information. The following hypothesis is proposed : Thinking produces a solution which contains information. Only the useful solution is memolized in an apparatus on the cerebral cortex. In this event, energy is consumed when the electric signal is transmitted from neuron to neuron. The information content can then be expressed in terms of energy.
