It's always too early to quit.
Only the educated are free.
To be a good loser is to learn how to win.
Never complain and never explain.
I can, therefore I am.
You never know what motivates you.
The dog that trots about finds a bone.
Know or listen to those who know.
If you can dream it, you can do it.
The most effective way to do it, is to do it.
There's a lot of interest from the medical community on how things develop in microgravity, and the hope, later, that is expected to apply to what the changes are in humans as well.