Were the instruments we possess for purposes of research fine enough, we should discover that actually every human being has a different liver composition, a different spleen composition, a different brain composition. Liver is not merely liver. In every individual — naturally, in a very delicate way — it is something different.
All this is connected with the same forces which cause the plants to grow. And in beholding the plant cover of the earth we must become conscious of the fact that what pours in out of the reaches of the ether, causing the plants to grow, works and acts also in us; it produces in us the original human potentiality which has a great deal to do with our destiny. For whether a person has received this or that liver, lung, or brain composition from the etheric universe is a matter profoundly connected with his destiny.
Rudolf Steiner – GA 235 – The karma Question and the Hierarchies: Lecture II: Karma – Dornach, February 17, 1924
Translated by Henry B. Monges