Stories Television Doctor Who Season 15 Classic Who S15 Serial: 1 2 3 4 5 6 The Invisible Enemy 1 image Back to Story Quotes Add Quote Link to Quote Favourite DOCTOR: Sometimes my brilliance astonishes even me. — Fourth Doctor, The Invisible Enemy Link to Quote Favourite DOCTOR: That's the trouble with computers. Always think in black and white. No aquamarines, no blues, no imagination. — Fourth Doctor, The Invisible Enemy
