The linguistic analysis of dialogue reveals that the true meaning of the word, etymologically well founded, and historically proved, is: the communion of thoughts achieved through the words. Being by their nature arbitrary, the words don’t have sense without a culture, which confirms the imaginary value of their linguistic meaning. Every dialogue that would like to be a true dialogue must, therefore, be a culturally implemented exchange of words: that is, respectful of the images of the world delivered to them by the culture of every person with whom one is talking to.