There are receptors to these molecules in your immune system, in your gut and in your heart. So when you say, 'I have a gut feeling' or 'my heart is sad' or 'I am bursting with joy,' you're not speaking metaphorically. You're speaking literally.

Truth cannot be constructed. To live in ideology is, as Havel so eloquently reminds us, inevitably to live in a lie. Truth can only be revealed. We cannot be creators, only receptors.