The term "spirituality" is a confusing term. Usually, when one mentions "spirituality", first thought in many people's minds is that of "religion". While religion is an aspect of spirituality, spirituality is not an aspect of religion. Spirituality covers other areas of belief as well. Put simply, spirituality is all-encompassing arena of "belief in something greater." This can be a god, oneself as greater being, or simply, life-force or essence that surrounds us all. But, society and religion lead their followers in many different directions replacing core meanings with moralistic and idealistic terms in hopes of garnering attention by answering those "big questions" pertaining to life, death, after-life, and a god.
--- Faith vs. Knowledge ---
While many religious zealots view idea of knowledge-based spirituality as "agnostic", indeed, it is not. As a matter of fact, even agnosts believe in something, which provides them an alternative stance to organized religion and gods. You have to believe in something to take a stance!
Faith-based spirituality is belief and trust that things will be as they will be in future. It is acceptance of "great mysteries" of life and death for which religion and society teaches that there are no "definitive answers." Such an approach to spirituality creates a fear-based environment based on gods who are vindictive and uncaring. Believers place their lives into hands of an unseen being in hope that all will "work out for best."
Knowledge-based spirituality is understanding and kinship of all and desire to achieve and progress through life toward one's own Vision and goals. The "great mysteries" become topics of personal research and, with an open mind, answers can be acquired from environment and Universe. This type of spirituality invites one to set aside fears and examine information and entities of surrounding environment. One has chance to take life into one's own hands and guide it along a path to one's own desires.
--- Hatred and Faith ---
One of problems of today is that, in our world, wars, hatred, and bias begin in moral grounds established by religion and society. Religion creates a solid separation between different factions of humanity. These factions take core ideals of society and mutate them to suit needs of their particular beliefs. In end, when societal boundaries are breached, and control languishes over ranks, uprisings and bitter conflicts begin to restore order. The stronger of factions wins and forces their beliefs on weaker.
In faith-based factions, fear is instilled and faith that a great hereafter exists. People fight to maintain their beliefs because they've finally "forced" their conscious minds to accept unanswered questions based on invisible and unfounded guesses by their "noblemen". The battles are fought to ensure that their foundations and comfort zones are not affected by infidels of intruding factions.
However, with knowledge-based factions, fear is minimized and great hereafter is right here and now and continues on forever. Knowledge provides mind with a greater degree of processing information arriving at our many senses in many contexts. It allows us to look beyond basics and outside of accepted "comfort zones" to comprehend ideas and ideals of other entities, both physical and spiritual.