Extremes are for us as though ...

Extremes are for us as though they were not, and we are not within their notice. They escape us, or we them. This is our true state; this is what makes us incapable of certain knowledge and of absolute ignorance... This is our natural condition, and yet most contrary to our inclination; we burn with desire to find solid ground and an ultimate sure foundation whereon to build a tower reaching to the Infinite. But our whole groundwork cracks, and the earth opens to abysses.
Extremes are for us as though they were not, and we are not within their notice. They escape us, or we them. This is our true state; this is what makes us incapable of certain knowledge and of absolute ignorance... This is our natural condition, and yet most contrary to our inclination; we burn with desire to find solid ground and an ultimate sure foundation whereon to build a tower reaching to the Infinite. But our whole groundwork cracks, and the earth opens to abysses.

Quotes from the same author

We are all something, but none of us are everything.
The heart has its reasons which reason knows not of.
Imagination disposes of everything; it creates beauty, justice, and happiness, which are everything in this world.
Man is equally incapable of seeing the nothingness from which he emerges and the infinity in which he is engulfed.
The least movement is of importance to all nature. The entire ocean is affected by a pebble.