The quotes:

1. Well, if I called the wrong number, why did you answer the phone?
2. A big, hardboiled city, with no more personality than a paper cup.
3. Like being savaged by a dead sheep.
4. Put your trust in God, my boys, and keep your powder dry.
5. No one ever suddenly became depraved.

The utterers or writers:

• Raymond Chandler, 1949
• Valentine Blacker, 1856
• Juvenal, AD 60 to 130
• James Thurber, 1937
• Dennis Healey, 1978

Bonus points:

• Blacker’s was attributed to which civil war leader?
• Chandler referred to which?
• Which other MP was he referring to?