Yes, Tigana is a stand-alone novel. It tells a complete story within itself without requiring any sequels or prequels to fully understand and enjoy it.
The Unique in Heaven and Earth was not an idiom. It was a word that was usually used to describe a person's knowledge, cultivation, and realm. It was beyond ordinary people's ability to walk alone in the world, with extraordinary strength and influence. This term was often used to describe some great figures such as Confucius and Lao Tzu.
One of the best stand - alone spy novels is 'The Spy Who Came in from the Cold' by John le Carré. It's a classic that offers a gritty and realistic look at the world of espionage during the Cold War. The characters are complex and the plot is full of twists and turns.
In fact, 'Pieces of Her' is a stand-alone novel. It provides a complete and fulfilling narrative within its own pages, not requiring any additional books to complete the story arc.
Definitely a stand-alone. 'The Dragons of Babel' provides a comprehensive and fulfilling narrative within its own pages, not requiring any additional books to make sense.