[Jane Long]

Principle is the correct spelling. It has *principal* in this thread's intro, but it's correct - principle - at the link.

principle |ˈprinsəpəl| noun

1 a fundamental truth or proposition that serves as the foundation for a system of belief or behavior or for a chain of reasoning:
2 a fundamental source or basis of something:

[txhurl]

Didn’t mean to sound snippy. I’m starving everyday for Cruz News.