Answer:
A blind man enters a maze, and the entrance closes behind him. His only way out is to solve the maze. A long time passes, and he exits the maze through the correct exit. How did he solve the maze?
What does man love more than life, fear more than death or mortal strife. What the poor have, the rich require, and what contented men desire. What the miser spends, and the spendthrift saves. And all men carry to their graves.
What can you throw but not catch?
I am a fire's best friend. When fat, my body fills with wind. When pushed to thin, through my nose I blow. Then you can watch the embers glow.
Be sure to shout for its answers are weak, but there is no language it cannot speak.
What scientists might call your pooch.