Mind Maze

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Across
  1. 2. I can fly without wings. I can cry without eyes. Wherever I go, darkness flies
  2. 5. I have cities but no houses, forests but no trees, and rivers but no water
  3. 6. I run but never walk, have a bed but never sleep, and have a mouth but never eat.
  4. 7. The more you have of me, the less you see
  5. 8. I have keys that don't open locks. I have space but no rooms and you can enter but you can't go inside
Down
  1. 1. The more you take, the more you leave behind
  2. 3. I'm tall when I'm young and I'm short when I'm old
  3. 4. I am always hungry and must always be fed. The finger I touch will soon turn red.
  4. 9. I'm as light as a feather, yet the strongest man can't hold me for more than a minute