De ‘looking-glass-self’ theorie van Coolidge

The world is a looking glass
Wherein ourselves are shown
Kindness for kindness, cheer for cheer
Coldness for gloom, repulse for fear,
To every soul his own.
We cannot change the world a whit,
Only ourselves who look at it.
C. Coolidge

oftewel:

We create the world we live in.
A loving person lives in a loving world,
a hostile person lives in a hostile world.
Everyone you meet is your mirror.