Riches I need not, nor man's empty praise.

The map is not the territory... The only usefulness of a map depends on similarity of structure between the empirical world and the map.

Thus, we see that one of the obvious origins of human disagreement lies in the use of noises for words.

Let us repeat the two crucial negative premises as established firmly by all human experience: (1) Words are not the things we are speaking about; and (2) There is no such thing as an object in absolute isolation.

It is amusing to discover, in the twentieth century, that the quarrels between two lovers, two mathematicians, two nations, two economic systems, usually assumed insoluble in a finite period should exhibit one mechanism, the semantic mechanism of identification - the discovery of which makes universal agreement possible, in mathematics and in life.

It seems evident that everything which exists in nature, is natural, no matter how simple or complicated a phenomenon it is; and on no occasion can the so-called 'supernatural' be anything else than a completely natural law, though it may, at the moment, be above and beyond the present understanding.

Mathematics and logic have been proved to be one; a fact from which it seems to follow that mathematics may successfully deal with non-quantitative problems in a much broader sense than was suspected to be possible.