Quotes from book
The Tragedy of Great Power Politics
The Tragedy of Great Power Politics is a book by the American scholar John Mearsheimer on the subject of international relations theory published by W.W. Norton & Company in 2001. Mearsheimer explains and argues for his theory of "offensive realism" by stating its key assumptions, evolution from early realist theory, and its predictive capability. He readily acknowledges the inherent pessimism of offensive realism and its predictions because his world is one in which conflict between great powers will never see an end.

“Important benefits often accrue to states that behave in an unexpected way.”
Source: The Tragedy of Great Power Politics (2001), Chapter 5, Strategies for Survival, p. 166

“Simply put, the most powerful state is the one that prevails in a dispute.”
Source: The Tragedy of Great Power Politics (2001), Chapter 3, Wealth and Power, p. 57

“States care about relative wealth, because economic might is the foundation of military might.”
Source: The Tragedy of Great Power Politics (2001), Chapter 5, Strategies for Survival, p. 143