Full Idea
It is clear from the case of memory that self-evidence has degrees, and is present in gradations ranging from absolute certainty down to an almost imperceptible faintness.
Gist of Idea
As shown by memory, self-evidence comes in degrees
Source
Bertrand Russell (Problems of Philosophy [1912], Ch.11)
Book Reference
Russell,Bertrand: 'The Problems of Philosophy' [OUP 1995], p.67
A Reaction
I am beginning to see Russell as the 'father of modern rationalism'. His relaxation of notions of an all-or-nothing a priori, and of a sharp distinction between axioms and proofs, lead to a sensible rationalism which even a Humean sceptic might buy.