Says Shlomo "The wise man's eyes are in the head", - and in no other place.

Well, where is the head?
The head is on the neck.

As the turkish proverb says: "They asked the wolf: "Why is your neck thick?", and it said: "I do my job myself, that's why.""

Which job is it?
The job is - in the beginning of the matter, to contemplate the end results.

As Yaakov blesses the youngest son: "Binyamin is a ravenous wolf; In the morning he consumes the prey, And in the evening he divides the spoil.”

But why did "they" ask about the neck?