We've all heard that one person can make a big difference. Most of us dismiss this as childhood claptrap that we're told so that we eat our peas and broccoli. Greg Mortenson has proven that this is absolutely true - and not just for the rich and famous.

The Power of Now by Eckhart Tolle has become a worldwide phenomenon, praised by Oprah, recommended by thousands. Like any book on spirituality and self help, it has the potential to help some people - and just won't be appropriate for others.

The Fish Philosophy is the subject of a bestseller in the Wall Street Journal's business list and helps teach businesspeople how to raise morale in the officeplace.

The Bible was never "one book". The process of putting together the Bible is known as "canonization" and is well documented.

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Søren Kierkegaard lived from 1813 to 1855. In that time he became well known for his philosophies of existentialism.

Hypatia was born in Egypt in the year 370. Her skills in philosophy were so great that she became the head of the Neoplatonist school of philosophy.

Gnosis means "knowledge" in Greek, and in essence the Gnostic religion is all about knowledge - secret knowledge. There was never a "centralized" gnostic group - it was a movement among all organized religions.

Evolution is the scientifically accepted system which explains how we are in our current form. The easiest way to explain evolution is by example.

People have said to me, "You can't possibly understand what it is to go through XXXX. You've never gone through it." There are many ways to think about this problem. Here are three differing viewpoints on empathy.