“Among the tendencies common to all human beings there are some which are considered to be the essence of mathematics; they are the tendency to abstract, to investigate, to imagine, to reason, to create, to calculate, to measure and to use precision to be exact...Considering the achievements of mankind, certain philosophers say categorically that the human being has a mathematical mind.” (Montessori, Mario)

“… even in the natural state the human mind has a mathematical bent, tending to be exact, to make measurements and comparisons.” (Montessori, Maria, Communications, 2011, 1-2, p. 84, “The Reform of Secondary Education.” This address was delivered to the Educational Committee of the Association of Head Mistresses on May 12, 1939 by Miss Phoebe Child on behalf of Maria Montessori.)