In April of 1953, James Watson and Francis Crick published an article in the journal Nature describing the structure of deoxyribonucleic acid, or DNA. This molecule of life was arranged in a double helix structure comprised of four nucleotides symbolized by the letters A, T, C and G. Aided by the photographs and analysis of a Jewish scientist named Rosalind Franklin, Watson and Crick explained how the four letters are arranged in pairs—A with T, C with G—and in their arrangement along the strands of DNA, how they form a genetic code from which proteins are created, and all organisms are formed. They are the letters of life. Each nucleotide is indispensable, but in isolation, they are powerless. Only in their combination do the components of DNA assume their great ability to fashion life in all of its diversity and wonder.
What scientists spent much of the twentieth century discovering and describing was similar in a sense to the intuition of our ancient Sages of blessed memory. They too believed that life was formed from building blocks, and that these could be identified with a letter code, specifically with the 22 letters of the Hebrew alphabet. In the Talmud at Brakhot 55a, Rav Yehudah says in the name of Rav that Bezalel, the architect of the tabernacle in Exodus, knew how to combine the letters used by God to create the world. Continue reading