It starts out with:
It is indeed the hardest task. When those you trusted have betrayed you. When those you counted as friends are dragging your good name through the mud. At times like that it becomes very hard to still love your fellow man, but it can be done.
The hardest task one can have is to continue
to love his fellows despite all reasons he
should not. And the true sign of sanity and
greatness is to so continue. For the one who
can achieve this, there is abundant hope.
For those who cannot, there is only sorrow,
hatred and despair. And these are not the
things of which greatness or sanity or
happiness are made.
Here is the full quote: What is Greatness?