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“Glaube mir, man kann das für Stärke des Geistes halten, was doch am Ende Verzweiflung ist [...].”
― Friedrich Schiller

“We now know that every particle has an antiparticle, with which it can annihilate. (In the case of the force-carrying particles, the antiparticles are the same as the particles themselves.) There could be whole antiworlds and antipeople made out of antiparticles. However, if you meet your antiself, don’t shake hands! You would both vanish in a great flash of light.”
― Stephen Hawking, A Brief History of Time

“nothing may travel faster than the speed of light. Because of the equivalence of energy and mass, the energy which an object has due to its motion will add to its mass. In other words, it will make it harder to increase its speed. This effect is only really significant for objects moving at speeds close to the speed of light. For example, at 10 percent of the speed of light an object’s mass is only 0.5 percent more than normal, while at 90 percent of the speed of light it would be more than twice its normal mass. As an object approaches the speed of light, its mass rises ever more quickly, so it takes more and more energy to speed it up further. It can in fact never reach the speed of light, because by then its mass would have become infinite, and by the equivalence of mass and energy, it would have taken an infinite amount of energy to get it there. For this reason, any normal object is forever confined by relativity to move at speeds slower than the speed of light. Only light, or other waves that have no intrinsic mass, can move at the speed of light.”
― Stephen Hawking, A Brief History of Time

“Aufmunternd sprach ich: »Ihr lieben Leut', Ihr müßt nicht jammern und flennen; Troja war eine bessere Stadt Und mußte doch verbrennen.”
― Heinrich Heine, Deutschland, ein Wintermärchen