Albert Einstein said that. Christians are trying to use it as an argument in: "Faith doesn't mean shutting your brain off" – A book trying to convince that the christian faith and science can both work together and don't contradict each other. I'm going to show you why why christians can't use Einstein's quote here and what it probably really meant. The quote goes:
"Science without religion is lame, religion without science is blind."
Therefore, scienctific, logical reasoning can actually be connected with religion. At least that's what the book says.

I have to be honest at first I was surprised that Albert Einstein was pro religion. I thought the more intellectual one is, the less he or she believes in a "personal god" - one that intervenes in human affairs.
I found out that Albert Einstein meant something whole different than what most people think of religion.
In his vocabulary the definition of religion was something cosmic, not something referring to a traditional religion. He didn't believe in a personal god, rather in religion describing morals and ethics.

So the correct interpretation would be:

1. Science without religion is lame -> Science is lame without a moral compass, without a spirit that can be amazed about the universe, something that comes from the spiritual world
2. Religion without science is blind -> Without science, religion can't comprehend the materialistic world and relies on dogmas rather than empirical evidence

While Albert Einstein actually thought that religion is complementary and not contradictory to science, he didn't mean it applying to christianity. He was defining religion in another way. He described the magic happening in the universe as god itself, not as an actual anthropomorphic entity – a personal god that intervenes in human affairs. The argument "Scienctific, logical reasoning can actually be connected with religion." is only true applying it with Einstein's definition of religion which is far away from christianity.