During my painful thesis writting, I read this book in order to get some relaxation together with Hull's book. If you are a rocket scientist, such as a struggeling ph.d candidata like me, you will find Hull's book is useful but simplified. This book is quite helpful to me because I used PDE. Statistic, SDE, numerical method here and there and in the book, Seydel shows how to put these skills together and how to solve problems.