Either you run the day or the day runs you.
To know oneself, one should assert oneself.
If you've got a talent, protect it.
Know or listen to those who know.
Be kind whenever possible. It is always possible.
If you're going through hell, keep going.
You never know what motivates you.
Go for it now. The future is promised to no one.
Begin to be now what you will be hereafter.
Expect problems and eat them for breakfast.
Science fiction is an amazing literature: plot elements that you would think would be completely worn out by now keep changing into surprising new forms.