The Earth Charter, championed by David Rockefeller and Maurice Strong may have well had earlier origins. A similar concept is mentioned by Salvador de Madariaga in an essay he contributed to the UNESCO predecessor, THE COMMITTEE FOR INTELLECTUAL COOPERATION and "A LEAGUE OF MINDS" for the League of Nations. This was set forth by Salvador de Madariaga. DeMadariaga is either the the Grandfather, "great uncle" or very distant cousin of Javier Solana, depending on which revised version of his genealogy one cares to believe. Those versions claiming he was his "great uncle" rely upon a supposed relationship that Javier's grandfather and Salvador de Mariaga were "cousins." Had that been true, they would have been only very distant cousins. Here is the current Wikipedia excerpt which contains the revised genealogy. Earlier Spanish ones plainly said that Solana was the "nieto" of Salvador de Madariaga, i.e. grandson.
'Solana was born in Madrid, Spain. He comes from a well-known Spanish family, being the grand nephew of Spanish League of Nations disarmament chief, diplomat, writer and European integrationist Salvador de Madariaga  (Javier's grandfather, Rogelio de Madariaga y Castro and Salvador de Madariaga were cousins).
It is hard to understand Solana distancing himself from such a distinguished and respected European academic and writer, until one considers the controversy over Theosophy and deMadariaga's open embrace of it. Had it been slightly veiled, Nieves Mathews a/k/a Prabhu Praveeta, the most likely candidate for the REAL mother of Javier Solana, revealed all in in her professions of adoration for her guru, Bhagwan Shree Rajneesh, a/k/a "Osho":
"My mother [Constance Archibald de Madariaga] was very close to the man who first brought Sufism to the west in our century-Hazrat Inayat Khan. I didn’t know him but as a child of eight, I was given my first Sufi name 'Hayat’ by him. It means’ life‘, and as my daughter wrote to me when she heard I was now called Praveeta’ that’s just a continuation - being pregnant with God.’ Inayat gave me my first name, and my whole childhood and adolescence was under the wing of this form of Sufis which came to the West. . . . Prabhu Praveeta: Oh! Don’t ask me! I was living all over the place. I lived in Geneva-working for 18 years with the United Nations’ FAO‘, being responsible for the Latin American of side grants and scholarships to people from underdeveloped countries-in England, In Spain, in France. Then after the war was over I went to Mexico and then travelling South America. Finally I went to Italy and there I’ve lived the longest period of my life. . . I knew Krishnamurti [the New Agers' collective candidate for "Maitreya" from 1910 through 1929] but I didn’t get on with him; I found him rather harsh. The others I’ve known were just flowering love and some of them were more reserved and quiet and you felt their radiance, but there wasn’t this communication at all . . ."At any rate, the Alliance of Civilizations, Maurice Strong, Steven C. Rockefeller and so many others have been working hard recently to promote an "Earth Charter" which is a "New Ark of the Covenant." It was an integral part of the doings at the high level Alliance of Civilizations meeting recently held in Rio de Janeiro May 27-29, 2010. Click on the above picture to get a larger picture!
It appears plain that Javier Solana was an instigating factor for the Alliance of Civilizations. Now, it appears that his mentor Grandfather/Cousin/Great Uncle, whatever, may have been an instigating factor for the Earth Charter as well. Whatever the relationship, Solana clearly heads the institute in Salvador de Madariaga's name. Consider the following text by Grandpa/Uncle/Cousin Salvador de Madariaga:
"THIS Eastertide I have heen performing a self-appointed task, that of meditating on the role of the spirit in the modern world. It is natural that my meditation should take the form of a letter to you for I was thinking not so much of the Holy Spirit as of the Healthy Spirit which I fancy as that magnetism which flows from your piercing glance and from the electric bristles of your pepper and salt moustache. You were moreover one of the first to think with me that it is precisely this question of the role of the spirit in the modern world which is at the basis of what, in the jargon of Geneva, is known as Intellectual Co-operation. There, from the very beginning of the League of Nations, when I was only one of its acolytes, lay, for me, its real activity, and there, while politicians smiled, saw the very soul of the Covenant, the idea which, in two or three centuries, historians will possibly consider as the most fertile of those.-' which the first World Charter erected into universal laws."
The preceding quotation paragraph was Salvador de Madariaga's "meditation" for what was the obvious predecessor for Donald Keys' 1981 "World Council of Wise Persons" and the Alliance of Civilizations "Group of Eminent Personalities." It was an entity they named "International Institute of Intellectual Cooperation" with its "League of Minds." I was fortunate to have found and obtained Limited Edition "numbered consecutively" 1002 of only 2,000 printed in 1933. I am putting up the Salvador de Madariaga chapter for which any copyright protection long since expired on my "Presentations for Downloading" link. Take advantage of it!