Aqui fica uma interessante citação sobre o significado da palavra grega logos:
The term logos has played a famous part in philosophical theology. It appears in our New Testament at the opening of the fourth Gospel, “In the beginning was the Logos.” Our translators render the Greek term by the English “Word.” It is derived from the verb legein, to “speak” or “say.” Logos is primarily “what is said,” utterance, or speech. Speech, however, must mean something. When we look out upon the objects of the world around us—rock, river, tree, horse, star—we learn to separate them into groups, because while some say quite different things to us, others speak to us, as it were, with nearly the same meaning. We recognise a common meaning in various sorts of dogs, or in still larger classes such as the whole family of birds. But in human intercourse what is said has first been thought. Logos thus takes on another meaning; it is what thinking says to itself, or what we call “reason.” The processes of science consist in finding out these meanings or reasons, and getting them into intelligible relations with each other. And when the early Greek thinkers had reached the conception of the unity of the world, here was a term which could be called in to express it. The world must have a meaning; it must express some thought. And did not thought imply thinking?