Tickets are on sale for the 2014-15 edition of this long-running, subscription-only series , featuring its characteristic array of authors, thinkers, entertainers and public servants.

The first of the seven-lecture series is Oct. 8, with actor Alan Alda of M*A*S*H and The West Wing fame.

On Oct. 29, there's Julia Gillard, the Welsh-born politician who was the first woman to be prime minister of Australia (holding the post from 2010-2013).

Former FBI Director Robert S. Mueller, III (who started work in that job a week before Sept. 11, 2001) speaks on Nov. 19.

Then come Huffington Post founder Arianna Huffington (Jan. 14); P.W. Singer, the noted expert on 21st-century warfare (Feb. 18); Pulitzer-winning historian and Pittsburgh native David McCullough (March 25); and futurist and TV/radio science host Michio Kaku (April 29).

The Robert Morris University-sponsored Pittsburgh Speakers Series is held at Heinz Hall, Downtown.

No tickets are sold for individual events. Series subscriptions cost $285-425 and are available here.