As our circle of knowledge expands, so does the circumference of darkness surrounding it.
It is the duty of the human understanding to understand that there are things which it cannot understand, and what those things are
There are genuine mysteries in the world that mark the limits of human knowing and thinking. Wisdom is fortified, not destroyed, by understanding its limitations. Ignorance does not make a fool as surely as self-deception.
All our science and philosophy form only an island of knowledge surrounded by an ocean of mystery. The larger the island grows, the longer the shoreline where the known meets the unknown.
We're forever teetering on the brink of the unknowable, and trying to understand what can't be understood.
The absurd . . . the fact that with God all things are possible. The absurd is not one of the factors which can be discriminated within the proper compass of the understanding: it is not identical with the improbable, the unexpected, the unforeseen.
We cannot comprehend what comprehends us.
Those who actually do have a valid claim to such special competence have a particular obligation to make very clear to the general public the limits of what is understood at any serious level; these limits are typically very narrow in matters of significance in human affairs.
Study is to study what cannot be studied. Undertaking means undertaking what cannot be undertaken. Philosophizing is to philosophize about what cannot be philosophized about. Knowing that knowing is unknowable is true perfection.
The limit of man s knowledge in any subject possesses a high interest which is perhaps increased by its close neighbourhood to the realms of imagination.