diff --git a/app/controllers/application_controller.rb b/app/controllers/application_controller.rb
index 8b68cbb..edcd95c 100644
--- a/app/controllers/application_controller.rb
+++ b/app/controllers/application_controller.rb
@@ -19,7 +19,7 @@ def tyrant
   rescue_from Trailblazer::NotAuthorizedError, with: :user_not_authorized
 
   def user_not_authorized
-    flash[:message] = "Not authorized, my friend."
+    flash[:message] = t('errors.user_not_authorized')
     redirect_to root_path
   end
 end
diff --git a/app/controllers/comments_controller.rb b/app/controllers/comments_controller.rb
index ac01130..b0b7e0e 100644
--- a/app/controllers/comments_controller.rb
+++ b/app/controllers/comments_controller.rb
@@ -9,7 +9,7 @@ def create
     @thing = Thing.find(params[:thing_id]) # UI-specific logic!
 
     run Comment::Create do |op|
-      flash[:notice] = "Created comment for \"#{op.thing.name}\""
+      flash[:notice] = t('comments.success_message', thing: op.thing.name)
 
       return redirect_to thing_path(op.thing)
     end
diff --git a/app/controllers/sessions_controller.rb b/app/controllers/sessions_controller.rb
index 5e57cfc..623e29e 100644
--- a/app/controllers/sessions_controller.rb
+++ b/app/controllers/sessions_controller.rb
@@ -5,7 +5,7 @@ def sign_up_form
 
   def sign_up
     run Session::SignUp do |op|
-      flash[:notice] = "Please log in now!"
+      flash[:notice] = t('session.log_in')
       return redirect_to sessions_sign_in_form_path
     end
 
@@ -46,7 +46,7 @@ def wake_up_form
 
   def wake_up
     run Session::ChangePassword do
-      flash[:notice] = "Password changed."
+      flash[:notice] = t('session.password_change_message')
        redirect_to sessions_sign_in_form_path # TODO: user profile.
        return
     end # TODO: require_original: true
diff --git a/app/controllers/things_controller.rb b/app/controllers/things_controller.rb
index 35856b3..fa57bd6 100644
--- a/app/controllers/things_controller.rb
+++ b/app/controllers/things_controller.rb
@@ -41,7 +41,7 @@ def create_comment
     @thing    = @thing_op.model
 
     run Comment::Create, params: params.merge(thing_id: params[:id]) do |op| # overrides @model and @form!
-      flash[:notice] = "Created comment for \"#{op.thing.name}\""
+      flash[:notice] = t('comments.success_message', thing: op.thing.name)
       return redirect_to thing_path(op.thing)
     end
 
diff --git a/app/views/home/index.html.haml b/app/views/home/index.html.haml
index 4952a01..c211e95 100644
--- a/app/views/home/index.html.haml
+++ b/app/views/home/index.html.haml
@@ -1,6 +1,6 @@
 .row
   %h3
-    Welcome to Gemgem!
+    = t('home.welcome_message')
 
 .row
   = concept("thing/cell/grid")
\ No newline at end of file
diff --git a/app/views/layouts/_navigation_links.html.haml b/app/views/layouts/_navigation_links.html.haml
index 787ceb5..b6e8636 100644
--- a/app/views/layouts/_navigation_links.html.haml
+++ b/app/views/layouts/_navigation_links.html.haml
@@ -1,9 +1,9 @@
 %li
-  = link_to "Start discussion!", new_thing_path
+  = link_to t('things.new'), new_thing_path
 
 - if tyrant.signed_in?
   %li
-    = link_to "Hi, #{tyrant.current_user.email}", user_path(tyrant.current_user)
+    = link_to t('session.hi_user', user: tyrant.current_user.email), user_path(tyrant.current_user)
   %li
     = link_to "Sign out", sessions_sign_out_path
 - else
diff --git a/app/views/sessions/sign_in_form.html.haml b/app/views/sessions/sign_in_form.html.haml
index f3f14fd..e4ba561 100644
--- a/app/views/sessions/sign_in_form.html.haml
+++ b/app/views/sessions/sign_in_form.html.haml
@@ -1,4 +1,5 @@
-%h1 Come in!
+%h1
+  = t('session.sign_in_message')
 
 = simple_form_for(@form, url: sessions_sign_in_path, as: :session) do |f|
   .row
diff --git a/app/views/sessions/sign_up_form.html.haml b/app/views/sessions/sign_up_form.html.haml
index 2314b47..58e22ec 100644
--- a/app/views/sessions/sign_up_form.html.haml
+++ b/app/views/sessions/sign_up_form.html.haml
@@ -1,4 +1,5 @@
-%h1 Come join us!
+%h1
+  = t('session.sign_up_message')
 
 = simple_form_for(@form, url: sessions_sign_up_path) do |f|
   .row
diff --git a/config/locales/en.yml b/config/locales/en.yml
index 0653957..a4bd150 100644
--- a/config/locales/en.yml
+++ b/config/locales/en.yml
@@ -21,3 +21,17 @@
 
 en:
   hello: "Hello world"
+  home:
+    welcome_message: Welcome to Gemgem!
+  session:
+    log_in: Please log in now!
+    sign_up_message: Come join us!
+    sign_in_message: Come in!
+    password_change_message: Password changed.
+    hi_user: Hi, %{user}
+  errors:
+    user_not_authorized: Not authorized, my friend.
+  comments:
+    success_message: Created comment for %{thing}
+  things:
+    new: Start discussion!