'I wish I could manage to be glad!' the Queen said. 'Only I never can remember the rule. You must be very happy, living in this wood, and being glad whenever you like!'

'Only it is so VERY lonely here!' Alice said in a melancholy voice; and at the thought of her loneliness two large tears came rolling down her cheeks.

'Oh, don't go on like that!' cried the poor Queen, wringing her hands in despair. 'Consider what a great girl you are. Consider what a long way you've come to-day. Consider what o'clock it is. Consider anything, only don't cry!'

Alice could not help laughing at this, even in the midst of her tears. 'Can YOU keep from crying by considering things?' she asked.

'That's the way it's done,' the Queen said with great decision: 'nobody can do two things at once, you know.
(Through the Looking Glass, Lewis Carroll)