Meaningful ideas and quotes

[vulcanlogician]

Somehow tonight I misread the title as "Meaningless ideas and quotes."  I think either could work.

When people see some things as beautiful,
other things become ugly.
When people see some things as good,
other things become bad.

Being and non-being create each other.
Difficult and easy support each other.
Long and short define each other.
High and low depend on each other.
Before and after follow each other.

Meaninglessness and meaningfulness define each other, too.
They are part of an inseparable whole...
Hold on to the center