“Whatever the nature of organizing relations may be,′ J. Needham wrote in 1932, ’they form the central problem of biology, and biology will be fruitful in the future only if this is recognized. The hierarchy of relations, from the molecular structure of carbon compounds to the equilibrium of species and ecological wholes, will perhaps be the leading idea of the future.”

“Whatever the nature of organizing relations may be,′ J. Needham wrote in 1932, ’they form the central problem of biology, and biology will be fruitful in the future only if this is recognized. The hierarchy of relations, from the molecular structure of carbon compounds to the equilibrium of species and ecological wholes, will perhaps be the leading idea of the future.”

— Arthur Koestler