Who

.

He who knows not,

...and knows not

that he knows not,

is a fool...leave him!

He who 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 up!

He who knows,

...and knows

that he knows,

is wise...follow him!

~~Swami Vivekananda.