The greatest obstacle to discovering the truth is being convinced that you already know it.
Sooner or later, I'll be punctual.
How can I be sure I've succeeded, if I can't remember what I was trying to do
I've learned so much from my failures that I'm thinking of having some more.
Watch out! It's quite possible that some of my best mistakes haven't yet been made.
I'm not always depressed: only when I think and feel.