Without hard work, nothing grows but weeds.
You never know what motivates you.
Go for it now. The future is promised to no one.
The dog that trots about finds a bone.
Only the educated are free.
The most effective way to do it, is to do it.
Know or listen to those who know.
The secret of getting ahead is getting started.
It's always too early to quit.
Either you run the day or the day runs you.
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.