Bernie S. Siegel

Unconditional love is the most powerful stimulant of the immune system. The truth is: love heals. Miracles happen to exceptional patients every day—patients who have the courage to love, those who have the courage to work with their doctors to participate in and influence their own recovery.
-Bernie S. Siegel, Love, Medicine and Miracles: Lessons Learned about Self-Healing from a Surgeon's Experience with Exceptional Patients