A poem by Rudyard Kipling - Ideal for Medical students

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.

I send them over land and sea,

I send them East and West;

But after they have worked for me,

I give them all a rest.

I let them rest from nine till five,

For I am busy then,

As well as Breakfast, Lunch and Tea,

For they are hungry men:

But different folk have different views;

I know a person small,

 She keeps ten million serving men,

Who got no rest at all!

She sends 'em abroad on her own affairs,

From the second she opens her eyes - 

One million Hows, two million Wheres,

And seven million Whys!,