Quotes from Fritjof Capra

The Chinese believe that whenever a situation develops to its extreme, it is bound to turn around and become its opposite.

Leonardo did not pursue science and engineering in order to dominate nature, as Francis Bacon would advocate a century later, but always tried to learn as much as possible from nature. He was in awe of the beauty he saw in the complexity of natural forms, patterns, and processes, and aware that nature's ingenuity was far superior to human design. Accordingly, he often used natural processes and structures as models for his own designs.

This exceptional ability to interconnect observations and ideas from different disciplines lies at the very heart of Leonardo's approach to learning and research.

The parallels to modern physics [with mysticism] appear not only in the Vedas of Hinduism, in the I Ching, or in the Buddhist sutras, but also in the fragments of Heraclitus, in the Sufism of Ibn Arabi, or in the teachings of the Yaqui sorcerer Don Juan.

Both the physicist and the mystic want to communicate their knowledge, and when they do so with words their statements are paradoxical and full of logical contradictions.