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Quotes About Observation

Induction means really the process of coming to conclusions on the basis of observation. Deduction is the process of coming to conclusions on the basis of earlier abstractions.
~ Leonard Peikoff
The pre-Greek civilizations, never discovering the field of epistemology, had no explicit idea of a cognitive process which is systematic, secular, observation-based, logic-ruled; the medievals for centuries had no access to most of this knowledge. The dominant, mystical ideas of such cultures represent a nonrational approach to the world, not an antirational approach.
~ Leonard Peikoff
the first requirement of expanding his knowledge is induction, which is in essence the process of inferring a generalization from observations.
~ Leonard Peikoff
By virtue of being able directly to discriminate one aspect of reality, a consciousness cannot discriminate some other aspect that would require a different kind of sense organs. Whatever facts the senses do register, however, are facts. And these facts are what lead a mind eventually to the rest of its knowledge.
~ Leonard Peikoff
Aristotle maintains that there is only one reality: the world of particulars in which we live, the world men perceive by means of their physical senses.
~ Leonard Peikoff
Everything that surrounds you can give you something.51 —Hungarian photographer André Kertész
~ Leonard Sweet
The artist sees what others only catch a glimpse of.
~ Leonardo da Vinci
An average human looks without seeing, listens without hearing, touches without feeling, eats without tasting, moves without physical awareness, inhales without awareness of odour or fragrance, and talks without thinking.
~ Leonardo da Vinci
Learn how to see. Realize that everything connects to everything else.
~ Leonardo da Vinci
All sciences are vain and full of errors that are not born of Experience, the mother of all Knowledge.
~ Leonardo da Vinci
I awoke only to find that the rest of the world was still asleep.
~ Leonardo da Vinci
To develop a complete mind: Study the science of art; Study the art of science. Learn how to see. Realize that everything connects to everything else.
~ Leonardo da Vinci
It is an acknowledged fact that we perceive errors in the work of others more readily than in our own.
~ Leonardo da Vinci
All our knowledge hast its origins in our perceptions … In nature there is no effect without a cause … Experience never errs; it is only your judgments that err by promising themselves effects such as are not caused by your experiments … Science is the observation of things possible, whether present or past; prescience is the knowledge of things which may come to pass.
~ Leonardo da Vinci
The painter who draws merely by practice and by eye, without any reason, is like a mirror which copies every thing placed in front of it without being conscious of their existence.
~ Leonardo da Vinci
I awoke, only to see that the rest of the world is still asleep.
~ Leonardo da Vinci
La decadencia llega cuando el hombre deja de fijarse en la naturaleza
~ Leonardo da Vinci
Although a man be not a painter, he may have just opinions of the forms of men.
~ Leonardo da Vinci
It's not enough that you believe what you see. You must also understand what you see.
~ Leonardo da Vinci
Avoid the precepts of those thinkers whose reasoning is not confirmed by experience.
~ Leonardo da Vinci
He had searched to find a scientific basis for art, and discovered it in the imitation of nature, based on rational experience.
~ Leonardo da Vinci
A bird is like an instrument working according to mathematical law, and it is in the capacity of man to reproduce such an instrument
~ Leonardo da Vinci
Though I may not, like them, be able to quote other authors, I shall rely on that which is much greater and more worthy – on experience, the mistress of their Masters.
~ Leonardo da Vinci
Scully zerkn??a k?tem oka na Muldera. Kiedy spa?, wygl?da? niewinnie i bezbronnie jak dziecko. Geniusz w opa?ach czy k?opotliwy szaleniec? Pozosta?o jej tylko czeka? i obserwowa?.
~ Les Martin