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Truth was the only daughter of Time.
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When that which loves is united to the thing beloved it can rest there; when the burden is laid down it finds rest there. There will be eternal fame also for the inhabitants of that town, constructed and enlarged by him.
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The lover is moved by the beloved object as the senses are by sensual objects; and they unite and become one and the same thing. The work is the first thing born of this union; if the thing loved is base the lover becomes base.
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Truth at last cannot be hidden. Dissimulation is of no avail. Dissimulation is to no purpose before so great a judge. Falsehood puts on a mask. Nothing is hidden under the sun.
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We see the most striking example of humility in the lamb which will submit to any animal; and when they are given for food to imprisoned lions they are as gentle to them as to their own mother, so that very often it has been seen that the lions forbear to kill them.
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He who does not value life does not deserve it.
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The false interpreters of nature declare that quicksilver is the common seed of every metal, not remembering that nature varies the seed according to the variety of the things she desires to produce in the world.
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One who by himself is mild enough and void of all offence will become terrible and fierce by being in bad company, and will most cruelly take the life of many men, and would kill many more if they were not hindered by bodies having no soul, that have come out of caverns - that is, breastplates of iron.
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A shadow will appear dark in proportion to the brilliancy of the light surrounding it and conversely it will be less conspicuous where it is seen against a darker background.
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Necessity is the mistress and guide of nature.
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Fire destroys all sophistry, that is deceit; and maintains truth alone, that is gold.
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Painting is poetry which is seen and not heard, and poetry is a painting which is heard but not seen. These two arts, you may call them both either poetry or painting, have here interchanged the senses by which they penetrate to the intellect.
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Mechanics is the paradise of the mathematical sciences because by means of it one comes to the fruits of mathematics.
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The memory of benefits is a frail defence against ingratitude.
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There is no certainty in sciences where one of the mathematical sciences cannot be applied, or which are not in relation with these mathematics.
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The variety of colour in objects cannot be discerned at a great distance, excepting in those parts which are directly lighted up by the solar rays.
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Patience serves us against insults precisely as clothes do against the cold. For if you multiply your garments as the cold increases, that cold cannot hurt you; in the same way increase your patience under great offences, and they cannot hurt your feelings.
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Constancy does not begin, but is that which perseveres.
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The bones of the Dead will be seen to govern the fortunes of him who moves them.
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Do not reveal, if liberty is precious to you; my face is the prison of love.
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There will be many which will increase in their destruction.
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I am not to blame for putting forward, in the course of my work on science, any general rule derived from a previous conclusion.
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There will be many men who will move one against another, holding in their hands a cutting tool. But these will not do each other any injury beyond tiring each other; for, when one pushes forward the other will draw back. But woe to him who comes between them! For he will end by being cut in pieces.
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It is easier to contend with evil at the first than at the last.