Quotes from book
Tertium Organum

"An imposing edifice of thought. Every one of its twenty chapters will richly repay careful reading. Those passages dealing with ethics, love, the significance of knowledge, and the meaning of life are hard to surpass." - New York Evening Post The title of this book, Tertium Organum, boldly refers no less to a reorganization of all knowledge, but it is primarily a study of psychology, more specifically the psychology of our higher mind. For Ouspensky what we can call the higher mind represents, within a single person, the development of an entirely new way of understanding. In short, psychology is the art of self-study. With remarkable scope and sophistication, Ouspensky shows us in this book, which has been hailed as "a work of genius," just how vast and strange our universe really is.

Tertium Organum (1922)
Context: Generally speaking, the significance of the indirect results may very often be of more importance than the significance of direct ones. And since we are able to trace how the energy of love transforms itself into instincts, ideas, creative forces on different planes of life; into symbols of art, song, music, poetry; so can we easily imagine how the same energy may transform itself into a higher order of intuition, into a higher consciousness which will reveal to us a marvelous and mysterious world.
In all living nature (and perhaps also in that which we consider as dead) love is the motive force which drives the creative activity in the most diverse directions.

Source: Tertium Organum (1912; 1922), Ch. I
Context: We know that with the very first awakening of knowledge, man is confronted with two obvious facts:
The existence of the world in which he lives; and the existence of psychic life in himself.
Neither of these can he prove or disprove, but they are facts: they constitute reality for him.
It is possible to meditate upon the mutual correlation of these two facts. It is possible to try to reduce them to one; that is, to regard the psychic or inner world as a part, reflection, or function of the world, or the world as a part, reflection, or function of that inner world. But such a procedure constitutes a departure from facts, and all such considerations of the world and of the self, to the ordinary non-philosophical mind, will not have the character of obviousness. On the contrary the sole obvious fact remains the antithesis of I and Not-I — our inner psychic life and the outer world.

Source: Tertium Organum (1912; 1922), Ch. I
Context: The most difficult thing is to know what we do know, and what we do not know.
Therefore, desiring to know anything, we shall before all else determine WHAT we accept as given, and WHAT as demanding definition and proof; that is, determine WHAT we know already, and WHAT we wish to know.
In relation to the knowledge of the world and of ourselves, the conditions would be ideal could we venture to accept nothing as given, and count all as demanding definition and proof. In other words, it would be best to assume that we know nothing, and make this our point of departure.
But unfortunately such conditions are impossible to create. Knowledge must start from some foundation, something must be recognized as known; otherwise we shall be obliged always to define one unknown by means of another.

“The absurdity of both these propositions shows that they cannot refer to our world.”
Source: Tertium Organum (1912; 1922), Ch. XXI
Context: The logical formula: A is both A and Not-A, corresponds to the mathematical formula: A magnitude can be greater or less than itself.
The absurdity of both these propositions shows that they cannot refer to our world. Of course absurdity, as such, is indeed not an index of the attributes of noumena, but the attributes of noumena will certainly be expressed in what are absurdities to us. To hope to find in the world of causes anything logical from our standpoint is just as useless as to think that the world of things can exist in accordance with the laws of a world of shadows or stereometry according to the laws of planimetry.
To master the fundamental principles of higher logic means to master the fundamentals of the understanding of a space of higher dimensions, or of the world of the wondrous.
In order to approach to a clear understanding of the relations of the multi-dimensional world, we must free ourselves from all the "idols" of our world, as Bacon calls them, i. e., from all obstacles to correct receptivity and reasoning. Then we shall have taken the most important step toward an inner affinity with the world of the wondrous.

Tertium Organum (1922)
Context: Generally speaking, the significance of the indirect results may very often be of more importance than the significance of direct ones. And since we are able to trace how the energy of love transforms itself into instincts, ideas, creative forces on different planes of life; into symbols of art, song, music, poetry; so can we easily imagine how the same energy may transform itself into a higher order of intuition, into a higher consciousness which will reveal to us a marvelous and mysterious world.
In all living nature (and perhaps also in that which we consider as dead) love is the motive force which drives the creative activity in the most diverse directions.

Source: Tertium Organum (1912; 1922), Ch. XXI
Context: The logical formula: A is both A and Not-A, corresponds to the mathematical formula: A magnitude can be greater or less than itself.
The absurdity of both these propositions shows that they cannot refer to our world. Of course absurdity, as such, is indeed not an index of the attributes of noumena, but the attributes of noumena will certainly be expressed in what are absurdities to us. To hope to find in the world of causes anything logical from our standpoint is just as useless as to think that the world of things can exist in accordance with the laws of a world of shadows or stereometry according to the laws of planimetry.
To master the fundamental principles of higher logic means to master the fundamentals of the understanding of a space of higher dimensions, or of the world of the wondrous.
In order to approach to a clear understanding of the relations of the multi-dimensional world, we must free ourselves from all the "idols" of our world, as Bacon calls them, i. e., from all obstacles to correct receptivity and reasoning. Then we shall have taken the most important step toward an inner affinity with the world of the wondrous.

“The most difficult thing is to know what we do know, and what we do not know.”
Source: Tertium Organum (1912; 1922), Ch. I
Context: The most difficult thing is to know what we do know, and what we do not know.
Therefore, desiring to know anything, we shall before all else determine WHAT we accept as given, and WHAT as demanding definition and proof; that is, determine WHAT we know already, and WHAT we wish to know.
In relation to the knowledge of the world and of ourselves, the conditions would be ideal could we venture to accept nothing as given, and count all as demanding definition and proof. In other words, it would be best to assume that we know nothing, and make this our point of departure.
But unfortunately such conditions are impossible to create. Knowledge must start from some foundation, something must be recognized as known; otherwise we shall be obliged always to define one unknown by means of another.