Discover the truth through practice, and again through practice verify and develop the truth. Start from perceptual knowledge and actively develop it into rational knowledge; then start from rational knowledge and actively guide revolutionary practice to change both the subjective and the objective world. Practice, knowledge, again practice, and again knowledge. This form repeats itself in endless cycles, and with each cycle the content of practice and knowledge rises to a higher level. Such is the whole of the dialectical-materialist theory of knowledge, and such is the dialectical-materialist theory of the unity of knowing and doing.
Mao ZedongRelated topics
change content cycle form guide knowing knowledge level objective practice rational revolutionary start theory truth unity world higherRelated quotes
I have presented the periodic table as a kind of travel guide to an imaginary country, of which the elements are the various regions. This kingdom has a geography: the elements lie in particular juxtaposition to one another, and they are used to produce goods, much as a prairie produces wheat and a lake produces fish. It also has a history. Indeed, it has three kinds of history: the elements were discovered much as the lands of the world were discovered; the kingdom was mapped, just as the world was mapped, and the relative positions of the elements came to take on a great significance; and the elements have their own cosmic history, which can be traced back to the stars.
Peter Atkins
Two possible approaches to the organization of general systems theory suggest themselves, which are to be thought of as complementary rather than competitive, or at least as two roads each of which is worth exploring. The first approach is to look over the empirical universe and to pick out certain general phenomena which are found in many different disciplines, and to seek to build up general theoretical models relevant to these phenomena. The second approach is to arrange the empirical fields in a hierarchy of complexity of organization of their basic "individual" or unit of behavior, and to try to develop a level of abstraction appropriate to each.
Kenneth Boulding
Magister Adler was deeply moved by something higher, but now when he wants to express his thoughts in words, wants to communicate, he confuses the subjective with the objective, his altered subjective state with an external event, the dawning of a light upon him with the coming into existence of something new outside him, the falling of the veil from his eyes with his having had a revelation. Subjectively his emotion is carried to the extreme; he wants to select the most powerful expression to describe it and by means of a mental deception grasps the objective qualification: having had a revelation.
Søren Kierkegaard
The only link between the verbal and objective world is exclusively structural, necessitating the conclusion that the only content of all "knowledge" is structural. Now structure can be considered as a complex of relations, and ultimately as multi-dimensional order. From this point of view, all language can be considered as names for unspeakable entities on the objective level, be it things or feelings, or as names of relations. In fact we find that an object represents an abstraction of a low order produced by our nervous system as the result of a sub-microscopic events acting as stimuli upon the nervous system.
Alfred Korzybski
I realized that our time in the White House would form the foundation for who they would become and how well we managed this experience could truly make or break them. That is what Barack and I think about every day as we try to guide and protect our girls through the challenges of this unusual life in the spotlight, how we urge them to ignore those who question their father's citizenship or faith. How we insist that the hateful language they hear from public figures on TV does not represent the true spirit of this country. How we explain that when someone is cruel or acts like a bully, you don't stoop to their level. No, our motto is, when they go low, we go high.
Michelle Obama
