Alice laughed: "There's no use trying," she said;
"one can't believe impossible things."
"I daresay you haven't had much practice," said the Queen.
"When I was younger, I always did it for half an hour a day.
Why sometimes I've believed as many as six
impossible things before breakfast."
- Lewis Carroll (Through the Looking Glass)
You must do the thing which you think you cannot do.
If we wait for the moment when everything, absolutely
everything is ready, we shall never begin.
In the depth of winter, I finally learned that within
me there lay an invincible summer.