Relation Quotes - page 27
E = mc2 really applies only to isolated bodies at rest. In general, when you have moving bodies, or interacting bodies, energy and mass aren't proportional. E = mc2 simply doesn't apply. ...For moving bodies, the correct mass-energy equation is
E=\frac {mc^2} {\sqrt{1-\frac{v^2} {c^2}}}
where v is the velocity. For a body at rest (v=0), this becomes E = mc2. ...we must consider the special case of particles with zero mass... examples include photons, color gluons, and gravitons. If we attempt to put m = 0 and v = c in our general mass-energy equation, both the numerator and denominator on the right-hand-side vanish, and we get the nonsensical relation E = 0/0. The correct result is that the energy of a photon can take any value. ...The energy E of a photon is proportional to the frequency f of the light it represents. ...they are related by the Planck-Einstein-Schrödinger equation E = hf, where h is Plank's constant.
Frank Wilczek
Among the English, we see on one side an exhibition of grossness and impudence in wickedness, and on the other, we admire their strictness and lofty eminence in that which is good. In that country, interest and conscience measure every thing. There is nothing intermediate between the two motives.In France, on the contrary, the gap between interest and conscience is admirably filled by honour. ... In its origin, honour had for its office to take the place of conscience. Where it was deficient, honour presented itself the heir, the distant relation of conscience. ... But honour itself is becoming weak. ... If this progress continues, it will end by being extinguished. But which will then become the heir of honour? Will it be interest or conscience?
Alexandre Vinet