Explanation Of The Tao Te Ching Part Seventy-one

“Knowing ignorance is strength. 
Ignoring knowledge is sickness. 

If one is sick of sickness, then one is not sick. 
The sage is not sick because he is sick of sickness. 
Therefore he is not sick.”

Thinking you’re not ignorant is the classic sign of ignorance. Being able to recognise it is a strength.

The play on words here can be confusing and is obviously humour, but when we see so much ignorance making society sick, we may seem to be out of step with others but that does not make us wrong.