From R. A. Schwaller de Lubicz, L'Appel du feu, 1926. Translated by Aaron Cheak.

"A thing is always triple in its nature: it exists in and of itself by virtue of its appearance, but it is also caused by a complementation of two states of the same nature. You yourself, by being man, human, result in principle from the complementation of two states of the same nature: that which affirms and that which denies, that which gives and that which receives, that which expresses and that which is “impressed”, i.e. that which receives the impression; this double state is your primordial, spiritual androgyny—and you have recollection of this duality in unity. Can you say that white light is composed of green and red light? No—and yet when it is broken through a prism it gives rise to two complementary colours, and the white light no longer exists. The colours are a transformation of white light, a transformation that imparts different vibrations to the same substance. The differences in vibration do not change the light, but their impressions appear differently to the eye, giving rise to diverse colours that are always complementary, two by two. Now remember: you are light, white light, and you will find your dimly remembered androgyny. You are light, but light broken through the prism of life, that is to say, through experiences and necessities."