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Concentrate all your thoughts upon the work at hand. The sun's rays do not burn until brought to a focus. – Alexander Graham
I am often mad, but I would hate to be nothing but mad and I think I would lose what little value I may have as a writer if I were to refuse, as a matter of principle, to accept the warming rays of the sun, and to report them, whenever, and if ever, they happen to strike me. – E. B. White
Physics is the science of all the tremendously powerful invisibilities - of magnetism, electricity, gravity, light, sound, cosmic rays. Physics is the science of the mysteries of the universe. How could anyone think it dull? – Dick Francis, Twice Shy
The rays of happiness, like those of light, are colourless when unbroken. – Longfellow

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