"This book is an extremely valuable contribution to the literature on symmetric Markov processes and Dirichlet forms and will certainly become a classic reference in the field."--Zoran Vondracek, Mathematical Reviews "This monograph is written very carefully. In summary, it is an ideal resource for researchers and very advanced graduate students in the field of Dirichlet forms and Hunt processes."--Michael Voit, Zentralblatt MATH "The presentation is comprehensive and self contained though it requires solid previous knowledge on theoretic probability together with some notions on measure theory and functional analysis. The volume can serve as textbook for graduate students or as a reference for researchers on the field."--Marco Castrillon Lopez, European Mathematical Society