9-10. It’s better to have a partner than go it alone. Share the work, share the wealth. And if one falls down, the other helps, but if there’s no one to help, tough!
11. Two in a bed warm each other. Alone, you shiver all night.
12. By yourself you’re unprotected. With a friend you can face the worst. Can you round up a third? A three-stranded rope isn’t easily snapped.