And the answer is no, I will not have a litmus test.

Sometimes the litmus test is not a particular book but an author.

The litmus test will be five years down the road, when company members tell us whether or not their time here made a difference.

I do not pass his litmus test on social policy.

If you have a society where sports are available, it's sort of a litmus test.

I don't know many people who could pass that litmus test.

The next few months will be the litmus test for media freedom.

"The litmus test is that they must be single and doing something interesting, at the top of their game," she said.

It's tough to make a decision about people based on that litmus test.

It's not necessarily a litmus test for who is the better friend.