How to change the indentation of a quote environment?

I am using a begin{quote} … end{quote} environment. Is it possible to change the indentation of the quote? Or do I need another package?

Here is a MWE:

documentclass[oneside,11pt]{book}
usepackage[semibold,tt=false]{libertine}
usepackage[
  expansion = false ,
  tracking = smallcaps ,
  letterspace = 40 ,
]{microtype}
usepackage{lipsum}

begin{document}

chapter*{Acknowledgments}

lipsum[1]
begin{quote}
{small This operation is somewhat like the periscope of a submarine. All you see is the three of us, but beneath the surface are thousands and thousands of others.}
end{quote}
lipsum[2]

end{document}

The quotation is from astronaut Michael Collins, by the way.