Riddle:
Many underestimate my importance, yet without me this world couldn't possibly survive. I come naturally for some, but others both try and struggle to obtain me. I can change your future for the better, but that doesn't mean it will be easier. What am I?
Answer: Knowledge.

Riddle:
At the sound of me, men may dream, Or stamp their feet. At the sound of me, women may laugh, Or sometimes weep. What am I?
Answer: I am Music!
Riddle:
Without a bridle, or a saddle, across a thing I ride a-straddle. And those I ride, by help of me, though almost blind, are made to see.
What am I?
Answer: Eye glasses.

Riddle:
I am aspired by all, yet hard to find. You can search endlessly, but have little peace of mind. What am I?
Answer: Happiness.
Riddle:
Lighter than air, I float away, with one mans touch I shall decay. What am I?
Answer: Bubble.

Riddle:
I can sizzle like bacon, I am made with an egg, I have plenty of backbone, but lack a good leg, I peel layers like onions, but still remain whole, I can be long, like a flagpole, yet fit in a hole.
What am I?
Answer: I'm a snake.
Riddle:
I wear you down, yet you'll mourn me once I fly. You can kill me, but I will never die. What am I?
Answer: Time.

Riddle:
You can't touch me nor see me, but I always pull you, keeping you heavy. When I am gone you will always float. What am I?
Answer: Gravity.
Riddle:
I have 16 legs then, I sleep for about a fortnight and a merge with 6 legs. What am I?
Answer: A Butterfly
Riddle:
You can't see me. You can't touch me. You can't hear me. You can't taste me. You can use me or create me. You can find me. I can be interrupted easily. Some enjoy me and othes fear me. What am I?
Answer: Silence.
Riddle:
Remove my forth letter and the first three letters will spell a school subject. My last five letters spell something that happens when swallowing a carrot whole. My whole spells a vegetable. What am I?
Answer: An artichoke.
Riddle:
I am large as a castle, yet lighter than air. 100 men and their horses cannot move me. What am I?
Answer: The castle's shadow.
Riddle:
I make you weak at the worst of all times. I keep you safe, I keep you fine. I make your hands sweat, and your heart grow cold, I visit the weak, but seldom the bold. What am I?
Answer: Your fears.
Riddle:
Duels of good and evil, A fighter of good am I, Revealed beside watched words, King of the black night sky. What am I?
Answer: The dark.
Riddle:
I am the enemy of all that is good and right. Five letters--that is the length of my name. Remove the first and evil I remain. What am I?
Answer: The devil. (D-evil)
Riddle:
Most ask for me, yet some hate to face me. For some I am agony and for others, I am relief. What am I?
Answer: The truth.
Riddle:
I like to roam but I'll always stay home,
I leave a silver track,
If you carried what I could carry with the way I moved,
You'd break your neck and back.
What am I?
Answer: A Snail.
Riddle:
I am the water of life, but seeing too much of me is never good. I am what binds families together, but I can be defied. What am I?
Answer: Blood.
Riddle:
I'm with you from birth. I make you feel everyday. Without me, you're nothing. What am I?
Answer: Your soul.
Riddle:
When I am metal or wood, I bring you home. When I am flesh and blood, in the darkness I roam. What am I?
Answer: A bat.