Assagioli asserted that "the direct experience of the self, of pure "self-awareness"... – is true." Spiritual goals of "self-realization" and the "interindividual psychosynthesis" – of 'social integration...the harmonious integration of the individual into ever larger groups up to the "one humanity"' – were central to Assagioli's theory. Psychosynthesis was not intended to be a school of thought or an exclusive method but many conferences and publications had it as a central theme and centres were formed in Italy and the United States in the 1960s.