The communal understanding of redemption and human self-worth has changed since Newton's time.
It is also worth remembering that the world has changed.
Private-equity firms, helped by tax breaks, and venture capitalists both have cash to spare, and there are private markets such as SecondMarket (where $1 billion-worth of shares has changed hands since 2008).
In ways that make a discussion of the old Georgetown social and political set seem laughably quaint, it is worth noting that Washington has changed since the White House was last occupied by a Bush.
It's worth thinking about how deregulation has changed the face of the airline industry.
For a poignant reminder of how economic life has changed, it's worth visiting the town's Berzdorfer See.
You only have a short period of time in life with him, is what has changed your perception worth throwing away this gift?
What's really worth marveling about is how much the city has changed in the last year or two.
Little has changed, though Bunton is reckoned to be worth £10m.
RATINGS Metropolitan has changed its rating system to: Don't Miss, Worth It, In a Pinch, and Don't Bother.
Though the market is only now becoming active, last year about $27.7 billion worth of office properties worth $5 million or more had changed hands through mid-December, more than twice the volume in 2009, according to Real Capital Analytics, a New York research firm that tracks sales.
