A Quote by Gottfried Leibniz

Men act like brutes in so far as the sequences of their perceptions arise through the principle of memory only, like those empirical physicians who have mere practice without theory.
I believe without exception that theory follows practice. Whenever there is a conflict between theory and practice, theory is wrong. As far as I'm concerned, we make theories for what people have done.
A hypothesis is empirical or scientific only if it can be tested by experience. A hypothesis or theory which cannot be, at least in principle, falsified by empirical observations and experiments does not belong to the realm of science.
Those who are enamoured of practice without science are like a pilot who goes into a ship without rudder or compass and never has any certainty of where he is going. Practice should always be based upon a sound knowledge of theory.
Those who are in love with practice without knowledge are like the sailor who gets into a ship without rudder or compass and who never can be certain whether he is going. Practice must always be founded on sound theory, and to this Perspective is the guide and the gateway; and without this nothing can be done well in the matter of drawing.
When men make themselves into brutes it is just to treat them like brutes.
A geometrical theory in physical interpretation can never be validated with mathematical certainty ... ; like any other theory of empirical science, it can acquire only a more or less high degree of confirmation.
Theory without practice is of little value, whereas practice is the proof of theory.Theory is the knowledge, practice the ability.
Most of all I like "bad" lines, that is those considered bad, in my opinion unjustly, by theory. The reason for the last quotation marks is that most so-called theory is only a collection of examples from master practice.
There is an ancient Indian saying that something lives only as long as the last person who remembers it. My people have come to trust memory over history. Memory, like fire, is radiant and immutable while history serves only those who seek to control it, those who douse the flame of memory in order to put out the dangerous fire of truth. Beware these men for they are dangerous themselves and unwise. Their false history is written in the blood of those who might remember and of those who seek the truth.
Before going back to college, i knew i didn't want to be an intellectual, spending my life in books and libraries without knowing what the hell is going on in the streets. Theory without practice is just as incomplete as practice without theory. The two have to go together.
Memory is quite central for me. Part of it is that I like the actual texture of writing through memory. I like the atmospheres that result if episodes are narrated through the haze of memory.
Going as far back as 'Dexter's Lab,' we've always had these sequences with no dialogue. The interesting thing is those sequences got the biggest reactions.
As far as leadership goes, it's important to know that we don't have to act like men to be leaders. Since men have been all we have had to look to as examples of leaders, that's how we think we have to act. But generally that's not how we have to act. We just have to act like ourselves. We do have to maintain a collaborative spirit. Also, at the end of the day you do have to step into your own power and say, "Okay, I've listened to all of these different opinions, advice, and so forth, but I am deciding this and this is how we are going to go."
He who loves practice without theory is like the sailor who boards ship without a rudder and compass and never knows where he may cast.
There is a distinction, but no opposition, between theory and practice. Each to a certain extent supposes the other. Theory is dependent on practice; practice must have preceded theory.
If you understand real practice, then archery or other activities can be zen. If you don't understand how to practice archery in its true sense, then even though you practice very hard, what you acquire is just technique. It won't help you through and through. Perhaps you can hit the mark without trying, but without a bow and arrow you cannot do anything. If you understand the point of practice, then even without a bow and arrow the archery will help you. How you get that kind of power or ability is only through right practice.
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