Either you run the day or the day runs you.
To be a good loser is to learn how to win.
If you can dream it, you can do it.
Quality is not an act, it is a habit.
The most effective way to do it, is to do it.
Leap, and the net will appear.
If you think you can do it, you can.
Things do not happen. Things are made to happen.
Problems are not stop signs, they are guidelines.
Go for it now. The future is promised to no one.
In hard-core science fiction in which characters are responding to a change in environment, caused by nature or the universe or technology, what readers want to see is how people cope, and so the character are present to cope, or fail to cope.