Chapter 71 The disease of knowing

知不知上;不知知病。夫唯病病,是以不病。聖人不病,以其病病,是以不病。

1. To know and yet (think) we do not know is the highest (attainment); not to know (and yet think) we do know is a disease.

2. It is simply by being pained at (the thought of) having this disease that we are preserved from it. The sage has not the disease. He knows the pain that would be inseparable from it, and therefore he does not have it.

Derek Lin

To know that you do not know is highest
To not know but think you know is flawed

Only when one recognizes the fault as a fault
can one be without fault

The sages are without fault
Because they recognize the fault as a fault
That is why they are without fault

Peter Merel

Who recognizes his limitations is healthy;
Who ignores his limitations is sick.
The sage recognizes this sickness as a limitation.
And so becomes immune.