diff --git a/feynman-lectures.md b/feynman-lectures.md
new file mode 100644
index 000000000..b6a06232c
--- /dev/null
+++ b/feynman-lectures.md
@@ -0,0 +1,9 @@
+# Feynman Lectures
+
+- From [[caltech]].
+- [[go]] https://www.feynmanlectures.caltech.edu/
+
+
+[//begin]: # "Autogenerated link references for markdown compatibility"
+[go]: go "Go"
+[//end]: # "Autogenerated link references"
\ No newline at end of file
diff --git a/journal/2021-01-05.md b/journal/2021-01-05.md
index d4ba52267..4380610aa 100644
--- a/journal/2021-01-05.md
+++ b/journal/2021-01-05.md
@@ -9,6 +9,7 @@
     - Implicit: the agora aggregates subnodes that follow a convention?
 - [[sleeper trains]]
 - [[concepts, techniques and models of computer programming]]
+- [[richard feynman]]
 
 [//begin]: # "Autogenerated link references for markdown compatibility"
 [olofl]: ../olofl "Olofl"
diff --git a/mozart.md b/mozart.md
index 558a1bc58..028e5f8c3 100644
--- a/mozart.md
+++ b/mozart.md
@@ -4,10 +4,12 @@
   - [[composer]]
 - A [[project]]
   - [[go]] mozart2.org
+  - [[gerhard-zorn]] https://twitter.com/ZornGerhard/status/1346396591138213889
 
 
 [//begin]: # "Autogenerated link references for markdown compatibility"
 [person]: person "Person"
 [project]: project "Project"
 [go]: go "Go"
+[gerhard-zorn]: gerhard-zorn "Gerhard Zorn"
 [//end]: # "Autogenerated link references"
\ No newline at end of file
diff --git a/richard-feynman.md b/richard-feynman.md
new file mode 100644
index 000000000..c4dadd87b
--- /dev/null
+++ b/richard-feynman.md
@@ -0,0 +1,4 @@
+# Richard Feynman
+
+- [[feynman lectures]]
+