Experiment is the sole interpreter of the artifices of Nature.
To make a perfume, take some rose water and wash your hands in it, then take a lavender flower and rub it with your palms, and you will achieve the desired effect
One's thoughts turn towards Hope.
A life well used procures a happy death.
Nature never breaks her own laws.
A single and distinct luminous body causes stronger relief in the objects than a diffused light; as may be seen by comparing one side of a landscape illuminated by the sun, and one overshadowed by clouds, and illuminated only by the diffused light of the atmosphere.