Be kind whenever possible. It is always possible.
Either you run the day or the day runs you.
Never complain and never explain.
Do not weep do not wax indignant. Understand.
You never know what motivates you.
Well done is better than well said.
By failing to prepare, you are preparing to fail.
Know or listen to those who know.
After a storm comes a calm.
Quality is not an act, it is a habit.
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.