3

"Three is the key."

Three is often teo opposites and a neutral.

Traits of 3

 * Odd number
 * Prime number

Examples of 3

 * Positive, negative, neutral
 * Mother, father, child
 * Acid, alkali, water
 * Protons, electrons, neutrons
 * Red, white, blue
 * Writer, reader, book
 * Id, ego, super-ego
 * Past, present, future
 * Win, lose, tie
 * Beginning, middle, end
 * Late, early, on time
 * Friend, foe, neutral
 * Father, Son, Holy Ghost
 * Fat, protein, carbohydrate
 * Length, width, height
 * Gold, silver, bronze