Any piece of knowledge I ...

Any piece of knowledge I acquire today has a value at this moment exactly proportional to my skill to deal with it. Tomorrow, when I know more, I recall that piece of knowledge and use it better.
Any piece of knowledge I acquire today has a value at this moment exactly proportional to my skill to deal with it. Tomorrow, when I know more, I recall that piece of knowledge and use it better.
 Mark Van Doren

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

There is one thing we can do, and the happiest of people are those who do it to the limit of their ability. We can be completely present.
 Mark Van Doren
Respect for the Truth is an acquired taste.
 Mark Van Doren
To be what no one ever was, to be what everyone has been: Freedom is the mean of those extremes that fence all effort in.
 Mark Van Doren