Who seeks shall find.
To be a good loser is to learn how to win.
If you think you can do it, you can.
By failing to prepare, you are preparing to fail.
Well done is better than well said.
Only the educated are free.
To know oneself, one should assert oneself.
Wherever you are - be all there.
Know or listen to those who know.
Problems are not stop signs, they are guidelines.
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.