A collection of quotes about spies, spying, intelligence and espionage:
Please feel free to add your own;
- ‘Nothing is more worthy of the attention of a good general than to endeavour to penetrate the designs of the enemy.’ – Niccolo Machiavelli
- ‘All the business of war, and indeed all the business of life, is to endeavour to find out what you don’t know from what you do’ – The Duke of Wellington