I suppose Kevorkian would disagree though, so again, can anything not be analyzed? 

Is there any thought that cannot be fought?

I suppose it is the nature of truth and reality to seep its way in through the cracks in our little walls. But it is not always truth that seeps.

It is that terrible black syrup, that terrible liquid that @alexbeyman writes about extensively. It is this feeling, this terrible grimness, that should not exist in life. It is not like scorching fire, or terrible plague, nor is it like pain or death of any sort.

Instead, it's a crumpling. A folding of will-power, or a defeat of idealism. A negation of hope. 

It's a terrible thing to let the darkness in, and once you stop trying to fight it, you are either awash with it, and survive, and begin to fight once more, or you succumb, and that is that. 

Either way, with my writing, I hope to forge tools of all sorts, swords and shields, and all manner of weaponry to defend us from terrible, sad, and awful things. To manipulate a person, to shatter their smile, to make a good life turn bad, is not tolerable. This darkness is not to be allowed in.

It must be fought, and we must win.

I have a question. Just to ponder. It relates to how we define the term suicide.

What should we consider suicide?
For instance, what about a loss of will to live. What if a person does not take their own life but rather stops fighting to stay alive. They stop eating and drinking water and slowly they fade away. Is this suicide?

Does suicide need to be a direct action or can it be a passive lack of action?

You made a string of statements at the beginning and from a normal, human perspective they all seem obvious, but I would like to state some wisdom from Buddhist monks who have transcended these questions.  Because in their understanding, you may understand more fully life, and thus be more averse to suicide.

> An idea so clever, it cannot be questioned?

Yes, you can have such a thought.  They appear as a flash of intuition.  A glimpse onto god if you will.   And you .... just know.

> A fact so precise, it cannot be proven?

Yes, there are several of these.  Proving god exists is one of them.  Once you know god, and see all the interconnectedness of this universe there is nothing that can shake your belief in god.  But, still, it cannot be proven.

> An ethic so virtuous, it cannot be violated?

This is more difficult one, however, free will is such a thing.
The way this universe is set up, it cannot be violated.

> An emotion so fulfilling, it cannot be felt?

When talking with angels, they describe their natural state as pure bliss.
A typical phrase is that saying hello, to an angel is equivalent to having sex times 100.
There are emotions so fulfilling, that are out of the range of humans to feel at this time.

> An object so real, it cannot be revealed?

Again, we would talk about god and the creation of this universe.
The realest thing.  The thing which all other objects have come from.
And it cannot be revealed, because of free will.  You have to choose to go and seek it yourself.

> A concept so comprehensive, it cannot be comprehended?

Again, if you look for god, you will run into a lot of this.  That the comprehensiveness of the universe is so great that you can't ever fit it all into your mind.

> Is there a philosophy so definite, it cannot be debated?

Yes, this is the path that Buddhist strive for.  Where your being becomes life; where your life becomes a perfect reflection of your being.

When one contemplates suicide, there is usually so much hurt that they cannot see a future without pain.  Our current memes on dealing with this pain is just to ignore it and get on with your life.

But, pain cannot be ignored.  As much as you push it down, it will resurface into your life.  Such that everything you do seems to be painful.

If, as a child, your mother shouted at you, "I hate you, you destroyed my life".  If your mother never showed you love, can you ever know love in your life?

Not until you go inside and heal the pain this wound of all wounds has caused.  Until you heal this, you will constant look for love, and seemingly find it, only to have it collapse / disappear.

And so, it is very easy to welcome your only true friend, the darkness.

'it reaches into our very hearts, and snatches away our warmth, our happiness, and all that is sane, and thus, it must never be considered'

I must confess I don't understand why you're so apodictic here. In some circumstances, you may well be considering a suicide exactly to save 'your warmth, your happiness, and all that is sane'. You may just try to hold on to yourself until the very end...