A Queen's sacrifice, even when fairly obvious, always rejoices the heart of the chess-lover.
The first essential for an attack is the will to attack.
No one ever won a game by resigning.
To avoid losing a piece, many a person has lost the game
A Chess game is divided into three stages: the first, when you hope you have the advantage, the second when you believe you have an advantage, and the third... when you know you're going to lose!
As for me, I am unfortunate enough not to posses a happy temperament like Najdorf, who views every happening in a rosy light and avoids any possibility of self-criticism. I am one of those unlucky skeptics who never overlook the dark side of even the happiest experience.