Know or listen to those who know.
Be gentle to all and stern with yourself.
What you do today can improve all your tomorrows.
Expect problems and eat them for breakfast.
If you've got a talent, protect it.
You never know what motivates you.
If you can dream it, you can do it.
Only the educated are free.
The wise does at once what the fool does at last.
To know oneself, one should assert oneself.
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.