I am deeply touched by the first quote. I suppose it aptly describes my life after my mum's untimely death. Now she's gone I wish I could wind back the time so I can spend moments with her again and do things I could have done for her. Every moment in our lives should be valued and should never be wasted doing profitless things. We've all got only one life and we should live it wisely.
Sorry for your loss. I also know how that feels. I have lost both parents already, and there are questions I have that can never be answered now. I didn't know the questions at the time though.