Her illness almost destroyed her life. It ended up giving her hope.

At the height of her professional career, groundbreaking immunologist Dr. Tamar Jehuda Cohen was diagnosed with a life-threatening brain aneurism. While doctors debated where and how they will operate, open, and remove parts of her brain, Tamar’s thoughts wander on the procedure’s effects on her mind – and her soul.

In the blink of an eye, Tamar’s professional life as a researcher, inventor, entrepreneur, lecturer, and scientist, built over twenty long years – was lost. In its place came epilepsy, severe pain, loss of speech, and other impossible obstacles imposed by complex brain surgeries.

Yet for Tamar, the aneurism was a godsend and a revelation. In the light of the struggles it brings, she found the energy and strength to grow, develop—and eventually, heal. With remarkable resilience, tenacity, vision, and hope; with plenty of compassion and zero self-pity, The Light of Reason is a life-affirming, courage-inspiring road through a mind faced with its own mortality, and the inner peace that lies within every single one of us.