The utmost extent of man's knowledge, is to know that he knows nothing.
Knowledge is power.
For in much wisdom is much grief: and he that increaseth knowledge increaseth sorrow.
Knowledge is two-fold, and consists not only in an affirmation of what is true, but in the negation of that which is false.
There is no subject so old that something new cannot be said about it.
A man should keep his little brain attic stocked with all the furniture that he is likely to use, and the rest he can put away in the lumber - room of his library, where he can get it if he wants it.
A man can only attain knowledge with the help of those who possess it. This must be understood from the very beginning. One must learn from him who knows.
Knowledge is like money: to be of value it must circulate, and in circulating it can increase in quantity and, hopefully, in value.
The only fence against the world is a thorough knowledge of it.
If education is always to be conceived along the same antiquated lines of a mere transmission of knowledge, there is little to be hoped from it in the bettering of man's future. For what is the use of transmitting knowledge if the individual's total development lags behind?
As the biggest library if it is in disorder is not as useful as a small but well-arranged one, so you may accumulate a vast amount of knowledge but it will be of far less value to you than a much smaller amount if you have not thought it over for yourself.
The desire of knowledge, like the thirst of riches, increases ever with the acquisition of it.
We have not the reverent feeling for the rainbow that a savage has, because we know how it is made. We have lost as much as we gained by prying into that matter.
There are only two kinds of people who are really fascinating--people who know absolutely everything, and people who know absolutely nothing.
