Which revolutionary leader authored the book 'The Philosophy of the Bomb'?

Who was the author of 'The Philosophy of the Bomb'?

The book "The Philosophy of the Bomb" is written by

The revolutionary, who was NOT involved in Hardinge Bomb incident was

The revolutionary, who was not involved in Hardinge Bomb incident?

Who among the following leaders founded the revolutionary organization 'Abhinav Bharat Society'?