Every judgment teeters on the brink of error,” Leto explained. “To claim absolute knowledge is to become monstrous. Knowledge is an unending adventure at the edge of uncertainty.

Absolute proof of absolute knowledge is impossible.

To claim absolute knowledge is to become monstrous. Knowledge is an unending adventure at the edge of uncertainty.

[K]nowledge that is not Infallible is not certain knowledge.

Knowledge is dangerous.

Nothing is more inimical to the progress of science than the belief that we know what we do not yet know.

Since human knowledge is not perfect, a more knowledgeable person is not always right.

They’re trained to believe, not to know. Belief can be manipulated. Only knowledge is dangerous.

Since knowledge is but sorrow's spy,
It is not safe to know.

To believe that we know nothing assuredly, and cannot ever know anything assuredly, is to take too much on faith.

Scientists are trained to not give absolute answers. It is interesting that in recent years, some have started to do so when talking with the media, because they've learned that whenever they include the very scientific words possibly, perhaps, and uncertainty, their conclusions are interpreted by the media and public as simple guesswork.

Beware of false knowledge, it is more dangers than ignorance.

Beware of false knowledge; it is more dangerous than ignorance.

It is dangerous to know, but it is more dangerous not to know.