A speculator is a man who observes the future, and acts before it occurs.

— Baruch, Bernard M.

Another great evil arising from this desire to be thought rich; or rather, from the desire not to be thought poor, is the destructive thing which has been honored by the name of speculation; but which ought to be called Gambling.

— Cobbett, William

The narrower the mind, the broader the statement.

— Cook, Ted

I never guess. It is a shocking habit -- destructive to the logical faculty.

— Doyle, Sir Arthur Conan

Speculation is only a word covering the making of money out of the manipulation of prices, instead of supplying goods and services.

— Ford, Henry

If the world were good for nothing else, it is a fine subject for speculation.

— Hazlitt, William

If there were no bad speculations there could be no good investments; if there were no wild ventures there would be no brilliantly successful enterprises.

— Hirst, F. W.

When speculation has done its worst, two and two still make four.

— Johnson, Samuel

What most people don't seem to realize is that there is just as much money to be made out of the wreckage of a civilization as from the upbuilding of one.

— Mitchell, Margaret

There are two times in a man's life when he should not speculate: when he can't afford it, and when he can.

— Twain, Mark