You never know what motivates you.
Be thine own palace, or the world's thy jail.
By failing to prepare, you are preparing to fail.
Do not weep do not wax indignant. Understand.
What you do today can improve all your tomorrows.
Without hard work, nothing grows but weeds.
The dog that trots about finds a bone.
I can, therefore I am.
If you can dream it, you can do it.
To know oneself, one should assert oneself.
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.