He who knows not,

and knows not,

that he knows not,

is a fool..leave him.

He knows not,

and knows,

that he knows not,

is simple..teach him.

He who knows,

and knows not,

that he knows,

is asleep..wake him.

He who knows,

and he knows,

that he knows,

is wise..follow him.

-Swami Vivekananda.