Asymbol is an image of a company, an institution or an idea that should convey with a clear statement, or by suggestion, the activity it represents. . the symbol, besides being memorable and legible, must be designed so that it can be used in many sizes and situations without losing its identity. the designer must distort, unify, and create a new form for the letter, so that it is unique, and yet has the necessary attributes of the letter for recognition. there is no part of a symbol that can be eliminated without destroying the image it creates. it is a true gestalt, in which the psychological effect of the total image is greater than the sum of its parts would indicate. . " who said this in 1960 about the designer's mission in logo design?