The theory of philosophy is suited and available to everyone who has the intelligence to grasp it, the faith to accept it, the intuition to recognize its supreme pre-eminence. The practice of philosophy is more restricted, being for those who have been sufficiently prepared by previous inner growth and outer experience to be willing to impose its higher ethical standards, mental training, and emotional discipline upon themselves. To come unprepared for the individual effort demanded, unfit for the intellectual and meditational exertions needed, unready for the teacher or the teaching, is to find bewilderment and to leave disappointed. A premature attempt to enter the school of philosophy will meet with the painful revelation of the dismaying shortcomings within oneself, which must be remedied before the attempt can be successful.
-- Notebooks Category 20: What Is Philosophy? > Chapter 2: Its Contemporary Influence > # 120
-- Perspectives > Chapter 20: What Is Philosophy? > # 32