'I know of no one writing in English who has this kind of grasp of Kant in the full historical context. The result is an encyclopedic treatment of this central Kantian theme, a theme lying at the heart of the critical philosophy that, despite the massive Kantian literature, has apparently never been discussed in depth in any language. This is an impressive study.'

Tom Rockmore, McAnulty College Distinguished Professor of Philosophy at Duquesne University, USA.

'The idea of spontaneity is central to interpreting Kant's philosophy and has been surprisingly underdeveloped in Kant's English-language reception. Marco Sgarbi addresses this lacuna by insightfully and lucidly articulating the historical development and philosophical significance of spontaneity in Kant's thought. This book will be an important resource for students and scholars of Kant interested in an original and sophisticated perspective on Kant's approach to spontaneity in its historical context and contemporary relevance.'

Eric S. Nelson, Associate Professor of Philosophy at University of Massachusetts Lowell, USA.