Health is much more than the absence of illness. The World Health Organization defines health in its charter as "a state of complete physical, mental and social well-being and not merely the absence of disease or infirmity". For those of us living in the 21st century, this definition perhaps gives us an ideal for which to strive. As we grow older, we hope to enjoy a state of "true health" that enables full, comprehensive satisfaction both physically and mentally. Hamamatsu Photonics is seeking ways to contribute to fulfilling that universal hope, building on photonics as the foundation of our effort.