Be gentle to all and stern with yourself.
What you do today can improve all your tomorrows.
If you're going through hell, keep going.
Wherever you are - be all there.
The most effective way to do it, is to do it.
The dog that trots about finds a bone.
To be a good loser is to learn how to win.
To know oneself, one should assert oneself.
Be kind whenever possible. It is always possible.
It's always too early to quit.
Though I had success in my research both when I was mad and when I was not, eventually I felt that my work would be better respected if I thought and acted like a 'normal' person.