True knowledge exists in ...

True knowledge exists in knowing that you know nothing.
True knowledge exists in knowing that you know nothing.
 Isocrates

More phrases

If one does not know to which port one is sailing, no wind is favorable.
What a distressing contrast there is between the radiant intelligence of the child and the feeble mentality of the average adult.
We are masters of the unsaid words, but slaves of those we let slip out.
I have always found that mercy bears richer fruits than strict justice.
A lie gets halfway around the world before the truth has a chance to get its pants on.

Quotes from the same author

The noblest worship is to make yourself as good and as just as you can.
 Isocrates
I decided that it was not wisdom that enabled poets to write their poetry, but a kind of instinct or inspiration, such as you find in seers and prophets who deliver all their sublime messages without knowing in the least what they mean.
 Isocrates
Be slow to fall into friendship; but when thou art in, continue firm and constant.
 Isocrates
True wisdom comes to each of us when we realize how little we understand about life, ourselves, and the world around us.
 Isocrates
The only true wisdom is in knowing you know nothing.
 Isocrates