Breaking the law a sin?

[Beware_the_Ides]

What about 89 mph?  88?  87?  57?  58?  Where is the proverbial line drawn?   ???

Reason and one's conscience, I would think.  I suppose it would require an exercise of the virtue of prudence.  In other words, "Did I drive recklessly?  Did I violate the 5th commandment?"

I think this is right on. As in other areas of life, a well-informed conscience must discern what is sin. For driving, you can't quantify what is sinful. In some instances, driving 90 in a 55 zone may not be sinful. It depends on if there is any apparent danger in doing so, which is, as you said, a matter of prudence and discernment. People drive safely at such speeds on the autobahn, for example.

God gave us rational minds for a purpose.

I hear ya...just thinking out loud a little bit.... 

What about federal taxes that are used to fund abortion vs. making stock profits by investing in a company that produces pornograhy, contraceptives, vaccines from fetal stem cells, etc., etc.  If I took my "five talents" and invested them thusly to obtain another five, would I be a good and faithful servant?