1. Everything you do dissipates heat, costs money, and makes crumbs.

2. Only a unique solution need have all the symmetries of the problem.

3. When tempted to make a generalization about Christians, try it out on Communists, and vice versa.

4. Successful systems accumulate parasites.

5. The world goes its way past all who will not partake of its folly.

6. When there's no news in the truth, there's no truth in the news.

7. Better to shut your mouth and be thought a fool than open it and remove all doubt.

8. What sticks to the spoon doesn't get stirred.

9. Imprudent sexual activity completes the life cycles of many pests.

10. Assholes have their uses.