“

As a well-spent day brings happy sleep, so a life well spent brings happy death.

” - Leonardo da Vinci

Research.  Stages/Tasks.  Vaillant.  Kohlberg.  Adult "maturation tasks".  Retirement.  Death.

I read a lot of research.  When I find an article of particular interest I download it to my bibliographic database - EndNote - which currently contains over 15,300 abstracts.