That character is shaped by circumstance and environment only spiritual dreamers may deny, but that it is wholly shaped by them only materialist dreamers may affirm. A keen, subtle, and sensitive intelligence can trace by logic, imagination, or intuition the fact of its own previous existence and hence accept the necessity of its development through reincarnation.

-- Notebooks Category 9: From Birth to Rebirth > Chapter 2: Rebirth and Reincarnation > # 37