"The first type of abstraction from objects I shall refer to as simple abstraction, but the second type I shall call reflective abstraction, using this term in a double sense"

- Jean Piaget

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This quote is written / told by Jean Piaget between August 9, 1896 and September 16, 1980. He/she was a famous Psychologist from Switzerland. The author also have 21 other quotes. Go to author profile