Idea is not the ultimate reality, it is only a manifestation of something which is its ultimate reality. The latter seems to be an abstraction. Intellectually it must be so because it is beyond the power of finite, human mentality to conceive it. But it may not be beyond the power of a higher faculty lying latent within us to have the experience of this reality--at least for a time. It is not known how to verify whether this is so or not unless the intellect humbly realizes its own limitations and voluntarily abnegates itself at a certain stage. In most cases this is done prematurely, hence the self-deceptions and hallucinations which are rife in mystical circles, but in the philosophical mystic's case it would come only after the fullest use of critical thought and analytic reasoning. This is the proper moment for such a suicidal act. For in the end he will be brought to such an abrupt turn. Perhaps Jesus' statement, "Except ye become as little children ye shall in no wise enter the kingdom of heaven," is appropriate here, if understood as an invitation not to foolishness but to surrender of all human pride.
-- Notebooks Category 7: The Intellect > Chapter 1 : The Place of Intellect > # 66
