In the neighbourhood of Weimar, Goethe often watched a vine slinging its foliaged stem about the trunk and branches of an elm tree. In this impressive sight nature offered him a picture of 'the female and male, the one that needs and the one that gives, side by side in the vertical and spiral directions'. Thus his artist's eye clearly detected in the upward striving of the plant a decisively masculine principle, and in its spiral winding an equally definite feminine principle. Since in the normal plant both principles are inwardly connected, 'we can represent vegetation as a whole as being in a secret androgynous union from the root up. From this union, through the changes of growth, both systems break away into open polarity and so stand in decisive opposition to each other, only to unite again in a higher sense.'