Reason is the soul of all law. — meaning?
Hi. There is a legal proverb:
Reason is the soul of all law.

Does “reason” mean “legal principle” here?
Thank you.

Question

Reason is the soul of all law. — meaning?
Hi. There is a legal proverb:
Reason is the soul of all law.

Does “reason” mean “legal principle” here? 
Thank you.

Answer

The reason as the power of consciousness to be able to tell right from wrong. Which he says is the soul of the law.