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We thank our friend Sheila Hicksfor her assistance in editing of the text.Book design:Massimo Vignelli with Beatriz CifuentesThis book is affectionately dedicated to Lella,my wife and professional partner.Together we shared our intellectual experiencesand growing process from the very beginningof our professional lives.Her creative intuition and sharp criticismhave enriched my life and have beenthe structural strength of our collaboration,without which my work would have beenworth much less.4