I came across this and wondered if you think this describes the essence of science:
"Science is the determination to establish differences."
Is this accurate?
I think its pretty good but still a little vague. While I can't come up with the essence I can refer you to a couple of famous quotes that seem to almost do the job. Accurate measurements are the #1 thing to pursue in Science. Even if you're wrong you've at least got accurate measurements.
"Measure what is measurable and make measurable what is not so" -- Galileo
Quote taken from:
Galileo Galilei Quotes
John Dalton discovered that atoms combine in whole number ratios. He was a Scientist before it was typical and considered himself to be a Philosopher. His occupation was as a schoolteacher. Here's a quote by him:
"The cause of rain is now, I consider, no longer an object of doubt. If two masses of air of unequal temperatures, by the ordinary currents of the winds, are intermixed, when saturated with vapour, a precipitation ensues. If the masses are under saturation, then less precipitation takes place, or none at all, according to the degree. Also, the warmer the air, the greater is the quantity of vapour precipitated in like circumstances. ... Hence the reason why rains are heavier in summer than in winter, and in warm countries than in cold." --John Dalton
So he made this determination about rain after doing what? He didn't just think about it or merely ponder it but was forced to consider it. It was his hypothesis formed from years of careful measurements.
Here's a quote about him by Jacob Bronowski:
"Dalton was a man of regular habits. For fifty-seven years he walked out of Manchester every day; he measured the rainfall, the temperature—a singularly monotonous enterprise in this climate. Of all that mass of data, nothing whatever came. But of the one searching, almost childlike question about the weights that enter the construction of these simple molecules—out of that came modern atomic theory. That is the essence of science: ask an impertinent question, and you are on the way to the pertinent answer."
So 1. Make accurate measurements 2. Be methodical, repetitious, tireless 3. Ask impertinent questions or childlike ones based out of those things. 4. Sometimes the data does not suggest anything, so just accept when it doesn't.
(The quotes of Dalton and Bronowski were taken from this page:
John Dalton Quotes - 21 Science Quotes - Dictionary of Science Quotations and Scientist Quotes)