diff --git a/smocore/include/quale.h b/smocore/include/quale.h
index 1968ade..0c939ef 100644
--- a/smocore/include/quale.h
+++ b/smocore/include/quale.h
@@ -3,8 +3,12 @@
 
 #include <cstdint>
 #include <attentionTrigger.h>
+#include <mentalExistent.h>
+
+namespace smo {
 
 class Quale
+: public MentalExistent
 {
 public:
 	enum class Type
@@ -19,6 +23,11 @@ public:
 		PLEASURABLE
 	} type;
 
+public:
+	Quale(const Type type, const int32_t intensity)
+	: type(type), intensity(intensity) {}
+
+public:
 	int32_t intensity;
 };
 
@@ -36,4 +45,6 @@ public:
 public:
 };
 
+} // namespace smo
+
 #endif