“The universality, invariance, and elegance of principles governing the universe may be reflected in principles of the minds that have evolved in that universe - provided that the mental principles are formulated with respect to the abstract spaces appropriate for the representation of biologically significant objects and their properties. (1) Positions and motions of objects conserve their shapes in the geometrically fullest and simplest way when represented as points and connecting geodesic paths in the six-dimensional manifold jointly determined by the Euclidean group of three· dimensional space and the symmetry group of each object. (2) Colors of objects attain constancy when represented as points in a three-dimensional vector space in which each variation in natural illumination is cancelled by application of its inverse from the three-dimensional linear group of terrestrial transformations of the invariant solar source. (3) Kinds of objects support optimal generalization and categorization when represented, in an evolutionarily shaped space of possible objects, as connected regions with associated weights determined by Bayesian revision of maximum entropy priors”

Six Principles of Political Realism, § 4.
Politics Among Nations (1948)
Context: Realism maintains that universal moral principles cannot be applied to the actions of states in their abstract universal formulation, but that they must be filtered through the concrete circumstances of time and place. The individual may say for himself: "Fiat justitia, pereat mundus (Let justice be done, even if the world perish)," but the state has no right to say so in the name of those who are in its care. Both individual and state must judge political action by universal moral principles, such as that of liberty. Yet while the individual has a moral right to sacrifice himself in defense of such a moral principle, the state has no right to let its moral disapprobation of the infringement of liberty get in the way of successful political action, itself inspired by the moral principle of national survival.

Source: Evolution and Theology (1900), p. 22.

Preface
The History and Present State of Electricity (1767)
Context: The History of Electricity is a field full of pleasing objects, according to all the genuine and universal principles of taste, deduced from a knowledge of human nature. Scenes like these, in which we see a gradual rise and progress in things, always exhibit a pleasing spectacle to the human mind. Nature, in all her delightful walks, abounds with such views, and they are in a more especial manner connected with every thing that relates to human life and happiness; things, in their own nature, the most interesting to us. Hence it is, that the power of association has annexed crowds of pleasing sensations to the contemplation of every object, in which this property is apparent.
This pleasure, likewise, bears a considerable resemblance to that of the sublime, which is one of the most exquisite of all those that affect the human imagination. For an object in which we see a perpetual progress and improvement is, as it were, continually rising in its magnitude; and moreover, when we see an actual increase, in a long period of time past, we cannot help forming an idea of an unlimited increase in futurity; which is a prospect really boundless, and sublime.

New Theories of Everything (2007)

21 : Setsudo - teaching the way of the universe
Ki Sayings (2003)

1 : Motto
Ki Sayings (2003)

"A University's Bequest to Youth" (10 October 1936)
Canadian Occasions (1940)
Context: To-day we have fewer dogmas, but I think that we have stronger principles. By a dogma I mean a deduction from facts which is only valid under certain conditions, and which becomes untrue if those conditions change. By a principle I mean something that is an eternal and universal truth.

New Principles of Linear Perspective (1715, 1749)

"The War Universe", taped conversation, first published in Grand Street, No. 37 (1991) http://openlibrary.org/b/OL7452886M/Grand_Street_37_(Grand_Street)
Context: This is a war universe. War all the time. That is its nature. There may be other universes based on all sorts of other principles, but ours seems to be based on war and games. All games are basically hostile. Winners and losers. We see them all around us: the winners and the losers. The losers can oftentimes become winners, and the winners can very easily become losers.