It has struck biologists of Goethe's own and later times that contrary to their method he did not build up his study of the plant by starting with its lowest form, and so the reproach has been levelled against him of having unduly neglected the latter. Because of this, the views he had come to were regarded as scientifically unfounded. Goethe's note-books prove that there is no justification for such a reproach. He was in actual fact deeply interested in the lower plants, but he realized that they could not contribute anything fundamental to the spiritual image of the plant as such which he was seeking to attain. To understand the plant he found himself obliged to pay special attention to examples in which it came to its most perfect expression. For what was hidden in the alga was made manifest in the rose. To demand of Goethe that in accordance with ordinary science he should have explained nature 'from below upwards' is to misunderstand the methodological basis of all his investigations.