diff --git a/book/source/06-signatures.md b/book/source/06-signatures.md
index a830a9b..04a7348 100644
--- a/book/source/06-signatures.md
+++ b/book/source/06-signatures.md
@@ -5,7 +5,7 @@ SPDX-License-Identifier: CC-BY-SA-4.0
 
 # OpenPGP Signatures
 
-Signatures make up the magic of OpenPGP. They act as the syntax that allows forming and interpreting rich statements about certificates and their components, as well as data.
+Signatures are perhaps the single most central mechanism in OpenPGP. They act as the syntax that allows forming and interpreting rich statements about certificates and their components, as well as data.
 
 Without signatures, there would only be loose keys, impossible to associate with a certificate, or their owner. Signatures are the glue that allows for components (component keys and identity components) to be assembled into hierarchical certificates, and for messages to gain authenticity.