What counts as rational argumentation is as historically determined and as context-dependent, as what counts as good French.

There is nothing to be known about anything except an initially large, and forever expandable, web of relations to other things. Everything that can serve as a term of relation can be dissolved into another set of relations, and so on for ever. There are, so to speak, relations all the way down, all the way up, and all the way out in every direction: you never reach something which is not just one more nexus of relations.

Truth [is] what is better for us to believe.

Academic disciplines are subject to being overtaken by attacks of "knowingness"- a state of mind and soul that prevents shudders of awe and makes one immune to enthusiasm.

National pride is to countries what self-respect is to individuals: a necessary condition for self-improvement.

There is nothing deep down inside us except what we have put there ourselves.

Philosophy makes progress not by becoming more rigorous but by becoming more imaginative.