If you think you can do it, you can.
I can, therefore I am.
If you're going through hell, keep going.
To know oneself, one should assert oneself.
Begin to be now what you will be hereafter.
Without hard work, nothing grows but weeds.
The wise does at once what the fool does at last.
Be kind whenever possible. It is always possible.
The dog that trots about finds a bone.
It's always too early to quit.
We found out the Gemini spacesuit was, well, oxygen was flowing to keep me cool as well as to breathe, and it wasn't good enough. My visor got fogged.