Frontpage has an introductory article on Leo Strauss and the roots of conservative thought.

The key Straussian concept is the Straussian text, which is a piece of philosophical writing that is deliberately written so that the average reader will understand it as saying one ("exoteric") thing but the special few for whom it is intended will grasp its real ("esoteric") meaning. The reason for this is that philosophy is dangerous. Philosophy calls into question the conventional morality upon which civil order in society depends; it also reveals ugly truths that weaken men's attachment to their societies. Ideally, it then offers an alternative based on reason, but understanding the reasoning is difficult and many people who read it will only understand the "calling into question" part and not the latter part that reconstructs ethics.

Worse, it is unclear whether philosophy really can construct a rational basis for ethics. Therefore philosophy has a tendency to promote nihilism in mediocre minds, and they must be prevented from being exposed to it. The civil authorities are frequently aware of this, and therefore they persecute and seek to silence philosophers.

It's a dense read (I added the break in the quote above), but you really should read it if you care about learning the underpinnings of conservative thought. I took Locke's suggestion for the Bloom book as an excuse to buy some more stuff from Amazon...