In 1905, I was privileged to be given a place in the private laboratory of my revered teacher, Professor W. H. Perkin, Jr. at the University of Manchester.

Possession of the pure synthetic specimens of the anthocyanidins and chief anthocyanins enabled my wife and me to devise quick tests for these colouring matters which can be used with the material from a few flower petals.

There is a close analogy between organic chemistry in its relation to biochemistry and pure mathematics in its relation to physics.

Robert Robinson Quotes