Not all that counts, can be counted

Concerning matter, we have been all wrong. What we have called matter is energy, whose vibration has been so lowered as to be perceptible to the senses. There is no matter.

E=mc2. Energy equals mass times the speed of light squared. The original statement is: If a body gives off the energy L in the form of radiation, its mass diminishes by L/c2. Ist die Tragheit eines Korpers von Seinem Energieghalt Abhangig? 1905

Music has no effect on research work, but both are born of the same source and complement each other through the satisfaction they bestow

Striving for peace and preparing for war are incompatible with each other, and in our time more so than ever.

Capitalism has brought with it progress, not merely in production but also in knowledge.

Those who have the privilege to know have the duty to act.