Here are some more:

27. If at first you don't succeed, you've probably misread the instructions.

28. The best things in life are free, but you should be wary of free offers.

29. I thank my friends for everything they have done for me. I curse my enemies for everything; they have done for me.

30. If someone gives you a present marked 'Gift', make sure it isn't from Germany.

31. In Britain, a trade union is a workers' association. In France, it is a hyphen.

32. An apple a day keeps the doctor away, so don't eat one if you're ill in bed.

33. The lion shall lie down with the lamb, or sometimes with the beef or the pork.

34. If a man smites you on one cheek, turn the other cheek and smite him on that.

35. Don't count your chickens until you've turned your calculator on.

36. Fools rush in where angels fear to tread, but there are still plenty left in the Church.

37. You can lead a horse to water, but it's quicker to ride it.

38. Turning down the heating saves energy. So does turning it up, as it stops you shivering.

39. People who played golf with Bing Crosby took the rough with the smooth.

40. The twelfth part of a year is a month. The twentieth part of a year is Inauguration Day.

41. What were the names of the two main antagonists in "Nineteen Eighty-Four"? Margaret Thatcher and Arthur Scargill.

42. When in Rome, do as the Romans do – wear a toga.

43. Don't mince your words, unless you have to eat them.