A Quote by Thomas Huxley

From the dawn of exact knowledge to the present day, observation, experiment, and speculation have gone hand in hand; and, whenever science has halted or strayed from the right path, it has been, either because its votaries have been content with mere unverified or unverifiable speculation (and this is the commonest case, because observation and experiment are hard work, while speculation is amusing); or it has been, because the accumulation of details of observation has for a time excluded speculation.
I am a firm believer, that without speculation there is no good and original observation.
[Theory is] an explanation that has been confirmed to such a degree, by observation and experiment, that knowledgeable experts accept it as fact. That's what scientists mean when they talk about a theory: not a dreamy and unreliable speculation, but an explanatory statement that fits the evidence. They embrace such an explanation confidently but provisionally - taking it as their best available view of reality, at least unil some severely conflicting data or some better explanation might come along.
By no amount of reasoning can we altogether eliminate all contingency from our world. Moreover, pure speculation alone will not enable us to get a determinate picture of the existing world. We must eliminate some of the conflicting possibilities, and this can be brought about only by experiment and observation.
One important idea is that science is a means whereby learning is achieved, not by mere theoretical speculation on the one hand, nor by the undirected accumulation of practical facts on the other, but rather by a motivated iteration between theory and practice.
High prices can be the result of speculation, and maybe plunging prices can be attributed to the end of speculation, but low prices over time aren't caused by speculation. That's oversupply, mainly by Saudi Arabia flooding the market with low-priced oil to discourage rival oil producers, whether it's Russian oil or American fracking.
Philosophy is regarded by many as inseparable from speculation. ... Philosophy has proceeded from speculation to science.
There's a certain degree of speculation that goes into valuations. In so far as the market supports a valuation, everyone who gets a great one deserves it, but they should also be cautious because that speculation is temporary. I saw Yahoo go from $100 billion to $10 billion. It's not a long-term measure.
Most areas of intellectual life have discovered the virtues of speculation, and have embraced them wildly. In academia, speculation is usually dignified as theory.
Too many composers become involved in intellectual speculation which seems to matter more to them than the sound that comes out of all this speculation.
In the 20th century philosophy of time for a great many theorists became part of science because it was time as is studied in physics that became the object of philosophical speculation. That's very different from the way time has normally been understood.
There's been a lot of speculation about every single girl I'm with and it actually does quite irritate me after a while, more so because it's a complete pain for the girls.
We continually forget that the sphere of morals is the sphere of action, that speculation in regard to morality is but observation and must remain in the sphere of intellectual comment, that a situation does not really become moral until we are confronted with the question of what shall be done in a concrete case, and are obliged to act upon our theory.
Trading is a small part of the work of the stock exchanges. They are really to do with financial speculation, and they speculate on the value of the yen, the dollar, the pound, the franc, or the euro, at any given time. Billions are lost and billions are made by this speculation, and that's what the stock exchanges are about. They are for greedy minds.
Good and bad ideas both come from the same fountain of speculation and experiment.
Personally I don't think day traders are speculating, because traditional speculation requires some market knowledge. They are, instead, gambling, which doesn't.
There has been no case made - based on anything other than speculation - that Iraq poses a threat.
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