For in 1900 all electromagnetic radiation of longer wavelengths was already known at least to the extent that one could not seek in it the more striking characteristics of X-rays such as, for example, the strong penetrating power.
“There's something about death that is comforting. The thought that you could die tomorrow frees you to appreciate your life now.”
“We must expect reverses, even defeats. They are sent to teach us wisdom and prudence, to call forth greater energies, and to prevent our falling into greater disasters.”