If you wish to understand yourself,
seek yourself in the wideness of the world;
if you wish to understand the world,
seek in the depths of your own mind.
Bockemühl, J., 1980. In Partnership with nature. BioDyn Farming Ass., Spring Valley, N.Y.
Bockemühl, J., 1985. Elements and Ethers: modes of observing the world. in: Bockemühl, J. (ed) Toward a phenomenology of the etheric world. Anthroposophic Press, Spring Valley, N.Y.
Bockemühl, J., 1990. Dying Forests. Anthroposophic Press, Spring Valley, N.Y.
Colquhoun, M. & A. Ewald, 1996. New Eyes for Plants – A workbook for observing and drawing plants. Hawthorn Press, Strout.
Holdrege, C., 1996. Genetics and the manipulation of life: The forgotten factor of context. Lindisfarne Press, Hudson, N.Y.
Romunde, Dick van, 2000. Over vormende krachten in de plantenwereld. Louis Bolk Instituut.
Steiner, R., 1920. The boundaries of natural science. Especially the 8th lecture. Rudolf Steiner Press, London.
Vereijken, J.F.H.M., T. van Gelder, T. and T. Baars, 1997. Hofindividualität als Leitbild. Lebendige Erde 4, 283 – 294.
Vereijken, J.F.H.M., T. van Gelder, T. and T. Baars, 1995. Nature and landscape development on bio-dynamic farms – Farm individuality as an aim. Elemente der Naturwissenschaft 63(2): 14-37.
Vries, A. de, 1985. Waarnemen en onderzoeken. Bolk bericht 12, Louis Bolk Instituut, Driebergen.
About animals
Gelder, T. van, 2003. Patronen op het spoor – Driegeleding bij zoogdieren. Privé-uitgave.
Schad, W., 1977. Man and Mammals: Toward a Biology of Form. Waldorf Press, Garden City, N.Y.
Suchantke, A., 2002. Metamorphose – Kunstgriff der Evolution. Freies Geistesleben, Stuttgart.
About meditation and the basic exercises
Flensburger Hefte 47, 1994. Übungen zur Selbsterziehung.