Stocks have reached what looks like a permanently high plateau. -- Irving Fisher, Professor of Economics, Yale University, 1929.

Stocks have reached what looks like a permanently high plateau. -- Irving Fisher, Professor of Economics, Yale University, 1929.

The opera isn't over till the fat lady sings. - "The Washington Post", June 13, 1978.

The opera isn't over till the fat lady sings. - "The Washington Post", June 13, 1978.

The concept is interesting and well-formed, but in order to earn better than a 'C,' the idea must be feasible. read more

The concept is interesting and well-formed, but in order to earn better than a 'C,' the idea must be feasible. -- A Yale University management professor in response to Fred Smith's paper proposing reliable overnight delivery service. (Smith went on to found Federal Express Corp.).

Everything that can be invented has been invented. -- Charles H. Duell, Commissioner, U.S. Office of Patents, 1899.

Everything that can be invented has been invented. -- Charles H. Duell, Commissioner, U.S. Office of Patents, 1899.

And so I leave this world, where the heart must either break or turn to lead.

And so I leave this world, where the heart must either break or turn to lead.

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

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 1920s.

I have tried so hard to do right.

I have tried so hard to do right.

All fled--all done, so lift me on the pyre;
The feast is over, and the lamps expire.

All fled--all done, so lift me on the pyre;
The feast is over, and the lamps expire.

Crito, I owe a cock to Asclepius; will you remember to pay the debt?

Crito, I owe a cock to Asclepius; will you remember to pay the debt?