What is your basis for morality?

There are many times that someone suggests that something is wrong. I have made a wrong post, one of my links leads to something wrong, somebody lied, someone is hiding something...

I thought I would ask a pertinent question...

WHAT IS YOUR BASIS FOR MORALITY?

What is your touchstone? What is the reason for the things you do. How do you know something is right or wrong in general? How do you know what is right or wrong for you personally? How do you determine that what someone else has done is wrong. In fact, is there a "right" and a "wrong?"

I can answer that question pretty easily. I am believer in God and I believe that he has the answers and the basis for moral behavior within the pages of the Bible. Once, when the Nation of Israel were a nomadic people, God established strict laws for them, laws too difficult to keep. They would then need to sacrifice animals and make offerings to symbolize the seriousness of sin and the need to find a means of atonement to God. Jesus Christ came to live and die and live again, freeing us from those specific laws concerning diet and sacrifices and so on and yet establishing the original ten commandments. Jesus also told us to treat others as we would have ourselves treated and many, many other admonitions. In short, I have absolutes. Thou shalt not kill. Thou shalt not bear false witness. Words directly from the Creator of the Universe to me. I didn't make them up and I follow in the footsteps of millions before me who adhere to the Biblical standard as the means of establishing what is right and what is wrong.

My question is, if you are not a believer and do not accept the Bible, do you have any absolutes? Do you have some means of establishing what is good and bad, right and wrong? What would that be?

I am especially curious as to what an atheist would answer?