Ashtekar is not alone in connecting modern cosmology with ancient non-Western thinking. There is a long tradition devoted to uncovering parallels between the two. Werner Heisenberg, one of the founding fathers of quantum mechanics, had a meeting on the issue with Rabindranath Tagore, the Indian poet and philosopher, in 1929. Later, the Austrian physicist Fritjof Capra popularised the connection between modern physics and mysticism through his groundbreaking book, The Tao of Physics (1975).