Anxiety and nothing always correspond to each other. As soon as the actuality of freedom and of spirit is posited, anxiety is canceled. But what then does the nothing of anxiety signify more particularly in paganism. This is fate. Fate is a relation to spirit as external. It is the relation between spirit and something else that is not spirit and to which fate nevertheless stands in a spiritual relation. Fate may also signify exactly the opposite, because it is the unity of necessity and accidental. ... A necessity that is not conscious of itself is eo ipso the accidental in relation to the next moment. Fate, then, is the nothing of anxiety. The Concept of Anxiety

One way to explain the complexity and unpredictability of historical systems, despite their ultimate determinacy, is to note that long chains of causation may separate final effects from ultimate causes lying outside the domain of that field of science. Guns, Germs And Steel

From a drop of water a logician could infer the possibility of an Atlantic or a Niagara without having seen or heard of one or the other. A Study in Scarlet

Where there have been powerful governments, societies, religions, public opinions, in short wherever there has been tyranny, there the solitary philosopher has been hated; for philosophy offers an asylum to a man into which no tyranny can force it way, the inward cave, the labyrinth of the heart. Untimely Meditations