Community cannot for long feed on itself; it can only flourish with the coming of others from beyond, their unknown and undiscovered brothers.
Uniform ideas originating among entire peoples unknown to each other must have a common ground of truth.
Men must be taught as if you taught them not, and things unknown proposed as things forgot.
It is the unknown that excites the ardor of scholars, who, in the known alone, would shrivel up with boredom.
The quarrels and divisions about religion were evils unknown to the heathen. The reason was because the religion of the heathen consisted rather in rites and ceremonies than in any constant belief.
For though we often need to be restored to the small, concrete, limited, and certain, we as often need to be reminded of the large, vague, unlimited, unknown.
The story of English spelling is the story of thousands of people – some well-known, most totally unknown – who left a permanent linguistic fingerprint on our orthography.
The common behavior of mankind is the system of reference by means of which we interpret an unknown language.
To us, the value of a work lies in its newness: the invention of new forms, or a novel combination of old forms, the discovery of unknown worlds or the exploration of unfamiliar areas in worlds already discovered – revelations, surprises.
The movement of search can only be from the known to the known, and all that the mind can do is to be aware that this movement will never uncover the unknown. Any movement on the part of the known is still within the field of the known.