Knowledge is knowing that we cannot know.

No man can reveal to you nothing but that which already lies half-asleep in the dawning of your knowledge.

When you know a thing to hold that you know it and when you do not know a thing to allow that you do not know it - this is knowledge.

I was bold in the pursuit of knowledge never fearing to follow truth and reason to whatever results they led and bearding every authority which stood in their way.

Knowledge of what is does not open the door directly to what should be.

My understanding is that what was provided was general order of battle information not operational intelligence. I certainly have no knowledge of US participation in preparing battle and strike packages and doubt strongly that that occurred.

Schools are not intended to moralize a wicked world but to impart knowledge and develop intelligence with only two social aims in mind: prepare to take on one's share in the world's work and perhaps in addition lend a hand in improving society after schooling is done.

I listen to them freely and with all the respect merited by their intelligence their character their knowledge reserving always my incontestable right of criticism and censure.

Science knows no country because knowledge belongs to humanity and is the torch which illuminates the world. Science is the highest personification of the nation because that nation will remain the first which carries the furthest the works of thought and intelligence.

The modern mind is in complete disarray. Knowledge has stretched itself to the point where neither the world nor our intelligence can find any foot-hold. It is a fact that we are suffering from nihilism.