This book offers some theoretical reflections, which may help the reader to discover the pleasure of understanding and expressing oneself, a pleasure that may simply be linked to the pleasure of being and living. To be understood is not only to "find the words". It is also to arouse the interest of the interlocutors, to dress one's words in an attractive way, to nourish one's thought and structure it and to discover in oneself capacities, to emphasize them, to refine one's sensitivity and to awaken one's imagination.