In its 20 chapters, this edited book opens new paths for theory and research in the area of foreign and second language (L2) motivation. It will be particularly useful to researchers, graduate students, and others who want to see an array of approaches to the topic. Both qualitative and quantitative investigations are included along with a number of themes that have not yet received much research attention: learning strategies and motivation, teacher motivation and its effect on learner motivation, personal identity, extrinsic and intrinsic motivation and beyond, unsuccessful learners' motivation, demotivation, and learning as “foraging.”