A 'Toss In' from our youth - and a keeper in this day and age!

I keep six honest serving-men
(They taught me all I knew);
Their names are What and Why and When
And How and Where and Who.

Kipling in "Just So Stories" (1902), 
           "How the Camel Got His Hump"

Six honest serving men that are especially important in these times of federal growth and interference!!