And taking out a mortgage is, essentially, a voluntary act.

A conversion is a voluntary act by one person inconsistent with the ownership rights of another.

I have no problem with that - it's a voluntary act.

Or it might be the last voluntary act of his life.

That's because spreading an idea is rarely a thoughtful, voluntary act.

For, the service does not stand upon the basis of a voluntary act, but is imposed by authority.

The Polonisation of this group was a voluntary act and happened very quickly.

It wasn't a voluntary act; I was forced to join.

"This is a voluntary act," he said at the airport.

Only by the voluntary act of that will could I be released.