To acquire knowledge, one ...

To acquire knowledge, one must study; but to acquire wisdom, one must observe.
To acquire knowledge, one must study; but to acquire wisdom, one must observe.
 Marilyn vos Savant

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

Just because you're unemployed doesn't mean you're not doing anything useful. You are, for example, at least keeping your mother-in-law's wit sharp.
 Marilyn vos Savant
The difference between America and England is that the English think 100 miles is a long distance and the Americans think 100 years is a long time. The difference between an autobiography and an unauthorized biography is like the difference between an account of your life written by your mother and one written by your mother-in-law.
 Marilyn vos Savant
Be able to confide your innermost secrets to your mother and your innermost fears to your father.
 Marilyn vos Savant
What is the essence of America? The essence of America is finding and maintaining that perfect, delicate balance between freedom "to" and freedom "from.
 Marilyn vos Savant
Know the official post office abbreviations for all 50 states without having to consult a list.
 Marilyn vos Savant