"Let the traveler come with other knowledge, experiences, having on the visible and invisible world other conceptions, other opinions, other options, and here is what perhaps begins the dialogue, that s' begins a mutual discovery where the richest is not necessarily the foreigner, but where two sides of curiosity meet not for a challenge, but for a complement. And if the leaven left by the traveler is the leaven of anxiety in the deepest sense, who will complain? "

Leopold Sedar Senghor