I am the center of gravity, hold a capital situation in Vienna, and as I am foremost in every victory, I am allowed by all to be invaluable.
Though I am invisible, I am clearly seen in the midst of a river.
I could name three who are in love with me, and I have three associates in vice.
It is in vain that you seek me for I have long been in heaven, yet even now I lie embalmed in the grave.
What am I?
I think you know where I am.
Because, as you know, I hold lots of knowledge.
Really, I can lend a helping hand.
Although since people most often come for
Riveting good stories and tales,
You, my friend, can find knowledge in me.
Whether it be history, science or braille.
I cannot be hold in your hand, you see.
I'm quite a bit larger than that
so come right in, and let's begin.
Put on your thinking cap!
I am the judge of both bitter defeat
And who may make claim to victory sweet
No matter what effort you may expend
Without me you will never reach the end
Defining a limit which yields results
Perhaps which a statistician consults
Without me you'd have no way of knowing
Whether to stop or to keep on going
What am I?
I usually am white or yellow,
Used as a tool by every fellow,
Primarily, used for cutting and grinding,
If slightly damaged, I am repaired with filling.
When broken, I am either capped or removed.
I am black as night but filled with light. I can be seen, even through a screen. I hold many secrets, waiting for them to be discovered. What am I?