Book excerpt: Comparative Literature: Sharing Knowledges for Preserving Cultural Diversity theme is a component of Encyclopedia of Social Sciences and Humanities in the global Encyclopedia of Life Support Systems (EOLSS), which is an integrated compendium of twenty one Encyclopedias. The Theme on Comparative Literature: Sharing Knowledge's for Preserving Cultural Diversity provides six different topics: 1. Language, literature and human sustainability; 2. Relationships among literature and other artistic activities and discourses ; 3. Comparative literature and other fields of knowledge; 4. Comparative literature, criticism and media ; 5. Comparative literature in the age of global change; 6. Translatio studii and cross-cultural movements or Weltverkehr. These three volumes are aimed at a wide spectrum of audiences: University and College Students, Educators and Research Personnel.