I have developed my previously held ideas and extended the results of my earlier researches. This has unfortunately led to unexpected modifications, to shifts of emphasis, and to revisions of values. These changes have led to a much broader outlook. People seem horrified when a man changes his views, but if it is sincerely done it is praiseworthy. That is what he is here on earth for--to change his views. They cannot be confined permanently in experience-proof and idea-tight compartments. With widening experience he should find his views widening, too. If he does not, then he is missing one of the purposes of incarnation. He is here to learn and he can not learn without modifying an old view. Each incarnation is a field of experience which he must plow, sow, and reap, not so much for immediate gains as for ultimate ones, not so much for material gains as for moral and mental ones.
-- Notebooks Category 12: Reflections > Chapter 5: The Literary Work > # 143