Be thine own palace, or the world's thy jail.
To know oneself, one should assert oneself.
Be gentle to all and stern with yourself.
Without hard work, nothing grows but weeds.
Be kind whenever possible. It is always possible.
If you've got a talent, protect it.
If you're going through hell, keep going.
Know or listen to those who know.
Only the educated are free.
If you think you can do it, you can.
One of the nice things about science fiction is that it lets us carry out thought experiments.
Some ideas you have to chew on, then roll them around a lot, play with them before you can turn them into funky science fiction.