To know or not to know is not a question

Luke 24 15And it came to pass, that, while they communed together and reasoned, Jesus himself drew near, and went with them.
16But their eyes were holden that they should not know him.
31And their eyes were opened, and they knew him; and he vanished out of their sight.

From the Book of First Corinthians: (46th bookof the KJV, 8th chapter, first verse)

46:008:001 Now as touching things offered unto idols, we know that we all have knowledge. Knowledge puffeth up, but charity edifieth.
46:008:002 And if any man think that he knoweth any thing, he knoweth nothing yet as he ought to know.
46:008:003 But if any man love God, the same is known of him.

"There is no proof of ignorance more common than conceit of knowledge. Much may be known, when nothing is known to good purpose. And those who think they know any thing, and grow vain thereon, are the least likely to make good use of their knowledge."-Matthew Henry's Concise Commentary, 1Cor8:1

"It is poetic imagination, not science, which presents Time as despotic lord of the world, with all the irresponsible frivolity of a child. It is mysticism, too, which leads Heraclitus to assert the identity of opposites: "Good and ill are one," he says; and again: "To God all things are fair and good and right, but men hold some things wrong and some right."

Much of mysticism underlies the ethics of Heraclitus. It is true that a scientific determinism alone might have inspired the statement:"Man's character is his fate"; but only a mystic would have said:
"Every beast is driven to the pasture with blows"; and again:
"It is hard to fight with one's heart's desire. Whatever it wishes to get, it purchases at the cost of soul"; and again:
"Wisdom is one thing. It is to know the thought by which all things are steered through all things."[1]"

Courtesy: -Project Gutenberg's Mysticism and Logic and Other Essays, by Bertrand Russell, [EBook #25447]