There is at least this to be said for mind, that it can dispel mind.
You cried for night - it falls. Now cry in darkness.
The only sin is the sin of being born.
Vladimir: I don't understand. Estragon: Use your intelligence, can't you? Vladimir uses his intelligence. Vladimir: (finally) I remain in the dark.
Go on failing. Go on. Only next time, try to fail better.
I can't go on. I'll go on.