Education is an admirable ...

Education is an admirable thing, but it is well to remember from time to time that nothing that is worth knowing can be taught.
Education is an admirable thing, but it is well to remember from time to time that nothing that is worth knowing can be taught.

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 only thing to do with good advice is to pass it on. It is never of any use to oneself.
The aim of life is self-development. To realize one's nature perfectly - that is what each of us is here for.
Be yourself; everyone else is already taken.
Laughter is not at all a bad beginning for a friendship, and it is far the best ending for one.
The smallest act of kindness is worth more than the grandest intention.