Srila Prabhupada said —

There are basically six types of human beings: Those who see only the bad in someone else; those who see both good and bad in others and choose the bad; those who see a little bad in someone and choose to make it very big. These are three. Then there are those who see both good and bad and choose the good; then those who see only good in others; and then there are the devotees, who see a little bit of good in someone and choose to make it very big.

From Shyamasundar Das's "Chasing Rhinos With the Swami." Vol. 1, p. 156.