Science is simply common sense at its best, that is, rigidly accurate in observation, and merciless to fallacy in logic.
Thomas Huxley

Shortly after this, I placed my command on our extreme left, to watch and fight the enemy should he make another attack, and went to Cemetary Hill for observation.
John Buford

Strategy requires thought, tactics require observation.
Max Euwe

Surely it is time to examine into the meaning of words and the nature of things, and to arrive at simple facts, not received upon the dictum of learned authorities, but upon attentive personal observation of what is passing around us.
Francis Wright

The Artist is he who detects and applies the law from observation of the works of Genius, whether of man or Nature. The Artisan is he who merely applies the rules which others have detected.
Henry David Thoreau

The first, or theoretic branch, that which explains the nature, production, and distribution of wealth, will be found to rest on a very few general propositions, which are the result of observation, or consciousness.
Nassau William Senior

The five steps in teaching an employee new skills are preparation, explanation, showing, observation and supervision.
Bruce Barton

The inquiries of the jurist are in truth prosecuted much as inquiry in physic and physiology was prosecuted before observation had taken the place of assumption.
Henry James Sumner Maine

The lesson of the last year is this: foreign policy can't be managed through the politics of personality, and our President would do well to take note of an observation John F. Kennedy made once he was in office - that all of the world's problems aren't his predecessor's fault.
Sarah Palin

The materials of the novelist must be real; they must be gathered from the field of humanity by his actual observation.
Goldwin Smith

The meaning of this observation is unclear, but it raises the unfortunate possibility of ambiguous triplets; that is, triplets which may code more than one amino acid. However one would certainly expect such triplets to be in a minority.
Francis Crick

The philosophy behind much advertising is based on the old observation that every man is really two men - the man he is and the man he wants to be.
William Feather

The power of accurate observation is commonly called cynicism by those who have not got it.
George Bernard Shaw

The result was that, if it happened to clear off after a cloudy evening, I frequently arose from my bed at any hour of the night or morning and walked two miles to the observatory to make some observation included in the programme.
Simon Newcomb

The service of philosophy, of speculative culture, towards the human spirit, is to rouse, to startle it to a life of constant and eager observation.
Walter Pater

The stories are not autobiographical, but they're personal in that way. I seem to know only the things that I've learned. Probably some things through observation, but what I feel I know surely is personal.
Alice Munro

The theory that can absorb the greatest number of facts, and persist in doing so, generation after generation, through all changes of opinion and detail, is the one that must rule all observation.
Adam Smith

The true spirit of conversation consists in building on another man's observation, not overturning it.
Edward G. Bulwer-Lytton

The ultimate court of appeal is observation and experiment... not authority.
Thomas Huxley

There are three kinds of men. The one that learns by reading. The few who learn by observation. The rest of them have to pee on the electric fence for themselves.
Will Rogers