Know or listen to those who know.
It's always too early to quit.
If you can dream it, you can do it.
Be kind whenever possible. It is always possible.
The most effective way to do it, is to do it.
Do not weep do not wax indignant. Understand.
By failing to prepare, you are preparing to fail.
Go for it now. The future is promised to no one.
Well done is better than well said.
Never complain and never explain.
I think space will be conquered through the mind rather than the clumsy medium of space travel.