«Humans speak nearly seven thousand languages, some with multiple dialects. The countless other species on Earth communicate with innumerably more, nearly all of which we have, thus far, failed to understand. […] Human languages are products of human minds, and thereby, can be understood by human minds, by means of human senses: sight, sound, touch. How could we begin to imagine an extraterrestrial language if we cannot imagine with what senses the beings communicate? They may not have vocal chords with which they produce sounds or ears with which they capture them. So we must rely on universally-understood concepts, and devise a communication method neither specific to location nor species nor world. Perhaps, the only similartiy between our species is the universe in which we both live. Thus, the language we are most likely to share is the study of the universe itself: science. The result of this conclusion was the Pioneer Plaque.»
Rosenthal, J. (2016). «The Pioneer Plaque: Science as a Universal Language». En Planetary.org.