Incidentally, It's Best Not To Argue With

I Think That Sick People In Ankh-morpork Generally Go To A Vet. It's Generally A Better Bet. There's More Pressure On A Vet To Get It Right. People Say "it Was God's Will" When Granny Dies, But They Get Angry When They Lose A Cow.

And All The Stories Had, Somewhere, The Witch. The Wicked Old Witch. And Tiffany Had Thought: Where's The Evidence?

Natural Selection Saw To It That Professional Heroes Who At A Crucial Moment Tended To Ask Themselves Questions Like 'what Is My Purpose In Life?' Very Quickly Lacked Both.

However, You Do Need Rules. Driving On The Left (or The Right Or, In Parts Of Europe, On The Left And The Right As The Mood Takes You) Is A Rule Which Works, Since Following It Means You're More Likely To Reach Your Intended Rather Than Your Final Destination.

Apes Had It Worked Out. No Ape Would Philosophize, "the Mountain Is, And Is Not." They Would Think, "the Banana Is. I Will Eat The Banana. There Is No Banana. I Want Another Banana.