The future is not what it used to be ...

Where a calculator on the ENIAC is equipped with 18,000 vacuum tubes and weighs 30 tons, computers in the future may only have 1,000 vacuum tubes and weigh only 1.5 tons.

- Popular Mechanics, March 1949

The future is already here - it's just not evenly distributed.

- William Gibson

Everything that can be invented has been invented.

Charles H. Duell, an official at the US Patent Office, 1899.

We stand on the threshold of rocket mail.

US postmaster general Arthur Summerfield, in 1959.

The wireless music box has no imaginable commercial value.  Who would pay for a message sent to nobody in particular?

- David Sarnoff's associates in response to his urgings for investment in the radio in the 1920's.