We Never Know

This is what I read and learned from a book that I bought from Malacca :

Life is uncertain, there are things we call bad luck and there are things we call good luck. But we never know if they are really bad luck or good luck. Yes, we don't know. Maybe you would think that something is good, but you never know what will happen on the next. Maybe something would make you sad or feel disappointed, but you never know what will happen then. Just like a quote from Goethe :

"Sometimes our fate resembles a fruit tree in winter. Who would think that those branches would turn green again and blossom, but we hope it, we know it."

Johann Wolfgang von Goethe 

 who knows ? only God knows :)