"Execution may have some appeal after all."
S1, Spacefall

"An intelligent man can adapt." 
S1, Spacefall

"Listen to me. Wealth is the only reality. And the only way to obtain wealth is to take it away  from somebody else." S1, Spacefall

"A new identity, a job in the Federation Banking System. Three months with their  computers, I could lift a hundred million credits and nobody would know where they went. Then let anyone try and touch me." S1, Spacefall

"Well, hurray for us."
S1, Time Squad

"All knowledge is valuable."
S1, The Web

"That's the trouble with heroics. They seldom run to schedule."
S1, Seek, Locate, Destroy

"It is frequently easier to be honest when you have nothing to lose."
S1, Mission to Destiny

"I have never understood why it should be necessary to become irrational in order to prove that you care, or, indeed, why it should be necessary to prove it at all."
S1, Duel

"Another idealist, poor but honest. I shall look forward to our meeting with eager anticipation."
S1, Project Avalon

"What's the matter? Did I bleed on the wrong bit of floor?"
S3, Rumours of Death

ANNA: "Do you trust anyone? Do you trust me?"
AVON: "Oh, yes. I'm afraid I do."
S3, Rumours of Death

"Trust is only dangerous when you have to rely on it."
S3, Rumours of Death

"I'd found my way around the security programs in the banking computers. I was about to undermine confidence in the entire Federation credit system. Anna and I were going to be so rich that no one could touch us."
S3, Rumours of Death

"I was shot. I was stupid enough to let him fire first."
S3, Rumours of Death

"Of all the things I have known myself to be, I never recognized the fool."
S3, Rumours of Death