Questionable Sanity

My sanity may be questioned
Time and time again
I'll still stand up for what I believe
That some cases
No matter how unsolvable they seem
Can one day be solved
Closed and laid to rest
Who would believe me?
Who would stand up for me?
I'm used to not being believed
I'm used to standing on my own two feet
Even if I sometimes have my head in the clouds
Dreaming the impossible dream
That one day the truth comes out
And sets us all free