From the heart of the fountain of delight rises a jet of bitterness that tortures us among the very flowers.
Lucretius(On the temperature of water in wells) The reason why the water in wells becomes colder in summer is that the earth is then rarefied by the heat, and releases into the air all the heat-particles it happens to have. So, the more the earth is drained of heat, the colder becomes the moisture that is concealed in the ground. On the other hand, when all the earth condenses and contracts and congeals with the cold, then, of course, as it contracts, it squeezes out into the wells whatever heat it holds.
LucretiusThe old must always make way for the new, and one thing must be built out of the ruins of another. There is no murky pit of hell awaiting anyone.
LucretiusAssuredly whatsoever things are fabled to exist in deep Acheron, these all exist in this life. There is no wretched Tantalus, fearing the great rock that hangs over him in the air and frozen with vain terror. Rather, it is in this life that fear of the gods oppresses mortals without cause, and the rock they fear is any that chance may bring.
Lucretius