I have always compared nations with heterogeneous conglomerates made up of individuals or social groups, all strongly cemented by homogeneous ethical feelings. Such indeed should also be our unique charming blue planet, and I nurse the hope that during what is left of time I shall witness the end product of such a process of international diagenesis. The reappearance of the Halley's Comet is perhaps an omen in this respect...


Presidential Address Delivered at the 14th General Meeting of the International Mineralogical Association at Stanford, California, USA", July 14, 1986.


I have always compared nations with heterogeneous conglomerates made up of individuals or social groups, all strongly cemented by homogeneous ethical ...

I have always compared nations with heterogeneous conglomerates made up of individuals or social groups, all strongly cemented by homogeneous ethical ...

I have always compared nations with heterogeneous conglomerates made up of individuals or social groups, all strongly cemented by homogeneous ethical ...

I have always compared nations with heterogeneous conglomerates made up of individuals or social groups, all strongly cemented by homogeneous ethical ...