Responding to a question of how translation theories travel across disciplinary boundaries, this article addresses the notion of “ideas traveling”, making critical reviews of Said’s Travelling Theories and Lydia Liu’s Translingual Practices. Besides, attention is given to some research conducted within sociobiological field. This article argues that ideas can never travel without media. Central to it is translation and persons who act as connectors. Another two factors involved are the attractiveness of the ideas per se and their transmission environment. As a conclusion, the monograph of Translation Memes is criticized for its ignorance of the important role played by media in circulating ideas. Centering on the proposal of transknowletology by Chinese scholar Yang Feng, who advocates the process of transferring local knowledge to the world, this article concludes that further efforts can be devoted to the study in terms of ontology, methodology and ethics so as to consolidate transknowletology.