 My standard response is you can learn something from all kinds of different works. Don't be afraid of things. However, when there's things that are contradictory to your faith, you have to be careful how you put them. There's a lot of people that put reverence towards things just because they're old. As a matter of fact, there's an informal logical fallacy called the appeal to antiquity. And it's when people assume something's better just because it's old.