"...It is the opium of the people..."

Shortest:

Religion is the sigh of the oppressed creature, the heart of a heartless world, just as it is the spirit of a spiritless situation. It is the opium of the people.
Karl Marx, Critique of Hegel's Philosophy of Right
German economist & Communist political philosopher (1818 - 1883)

In context:

Religious distress is at the same time the expression of real distress and the protest against real distress. Religion is the sigh of the oppressed creature, the heart of a heartless world, just as it is the spirit of a spiritless situation. It is the opium of the people. The abolition of religion as the illusory happiness of the people is required for their real happiness. The demand to give up the illusion about its condition is the demand to give up a condition which needs illusions.
Karl Marx, Critique of Hegel’s Philosophy of Right

From atheism.about.com:

In the above quotation Marx is saying that religion’s purpose is to create illusory fantasies for the poor. Economic realities prevent them from finding true happiness in this life, so religion tells them that this is OK because they will find true happiness in the next life. Although this is a criticism of religion, Marx is not without sympathy: people are in distress and religion provides solace, just as people who are physically injured receive relief from opiate-based drugs.

The quote is not, then, as negative as most portray (at least about religion). In some ways, even the slightly extended quote which people might see is a bit dishonest because saying “Religion is the sigh of the oppressed creature...” deliberately leaves out the additional statement that it is also the “heart of a heartless world.”

What we have is a critique of society that has become heartless rather than of religion which tries to provide a bit of solace. One can argue that Marx offers a partial validation of religion in that it tries to become the heart of a heartless world. For all its problems, religion doesn’t matter so much — it is not the real problem. Religion is a set of ideas, and ideas are expressions of material realities. Religion is a symptom of a disease, not the disease itself.

Still, it would be a mistake to think that Marx is uncritical towards religion — it may try to provide heart, but it fails. For Marx, the problem lies in the obvious fact that an opiate drug fails to fix a physical injury — it merely helps you forget pain and suffering. This may be fine up to a point, but only as long as you are also trying to solve the underlying problems causing the pain. Similarly, religion does not fix the underlying causes of people’s pain and suffering — instead, it helps them forget why they are suffering and gets them to look forward to an imaginary future when the pain will cease.

Maybe that's why we can't change the minds of the fundamentalists: we can't offer them a better drug, Our social issues of Poverty, Ignorance and Injustice are still with us. It's the height of irony that religion imposes its own injustices on so many...

Until we create a reality that is more attractive to them than the one they exist in now, they will remain addicted to the false promise of an afterlife.

(Click here to see a larger image and feel the "luuuvv"!)

(First posted at God is for Suckers!)