Final Goodbyes…

Why are final ‘goodbyes’ so important?

‘I’ve never forgotten him. Dare I say I miss him? I do. I miss him. I still see him in my dreams. They are nightmares mostly, but nightmares tinged with love. Such is the strangeness of the human heart. I still cannot understand how he could abandon me so unceremoniously, without any sort of goodbye, without looking back even once. The pain is like an axe that chops my heart.’
Yann Martel, Life of Pi