The wise does at once what the fool does at last.
Know or listen to those who know.
You never know what motivates you.
Begin to be now what you will be hereafter.
The dog that trots about finds a bone.
Go for it now. The future is promised to no one.
The most effective way to do it, is to do it.
If you're going through hell, keep going.
Only the educated are free.
I can, therefore I am.
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.