Not a Quaker, but I thought this was relevant.
This is old, but from what I just looked up (not an expert in Religion, sorry), "Quakers believe that there is something of God in everybody and that each human being is of unique worth. This is why Quakers value all people equally, and oppose anything that may harm or threaten them. Quakers seek religious truth in inner experience, and place great reliance on conscience as the basis of morality."
their key beliefs are, and I quote "Quakers invite the word of God to be written in our hearts, rather than as words on paper—we have no creed. But we also believe that if we are sincerely open to the Divine Will, we will be guided by a Wisdom that is more compelling than our own more superficial thoughts and feelings. This can mean that we will find ourselves led in directions or receiving understandings that we may not have chosen just from personal preference. Following such guidance is not always easy. This is why community is important to Quakers, why we turn to each other for worshipful help in making important choices, and why we read the reflections of other Quakers who have lived faithful lives."
Quakers are also activists, (I think) and are mainly focused on, and I quote again
- human rights, based on their belief in equality of all human beings
- social justice
- peace
- freedom of conscience
- environmental issues - Quakers seek to live simply so as to reduce the burden on the world
- community life
Views on the bible and other holy books: " The Bible is a book close to the hearts of many Friends. Many Quakers turn to the Hebrew and Christian scriptures for inspiration, insight, and guidance. They are valued as a source of wisdom that has been sacred to many generations. Quakers are informed by Biblical scholarship that offers perspective on the creation of the Bible and the understanding we have of it today. Most Quakers do not consider the Bible to be the final authority or the only source of sacred wisdom. We read it in the context of other religious writings and sources of wisdom, including the Light Within and worshipful community discernment. Some Quakers have little interest in the Bible."
Another thing: Quakers don't necessarily see themselves as christian. "The Quaker way has deep Christian roots that form our understanding of God, our faith, and our practices. Many Quakers consider themselves Christian, and some do not. Many Quakers today draw spiritual nourishment from our Christian roots and strive to follow the example of Jesus. Many other Quakers draw spiritual sustenance from various religious traditions, such as Buddhism, Judaism, Islam, Hinduism, and the nature religions. "
Sources:
Not sure if this is accurate or not, but I thought it could help. My first source may be outdated, as it was last updated in 2009.