For it is unknown what is the real nature of the soul, whether it be born with the bodily frame or be infused at the moment of birth, whether it perishes along with us, when death separates the soul and body, or whether it visits the shades of Pluto and bottomless pits, or enters by divine appointment into other animals.

Nothing comes from nothing.

The body searches for that which has injured the mind with love.

Out beyond our world there are, elsewhere, other assemblages of matter making other worlds. Ours is not the only one in air's embrace.

(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.

Fear is the mother of all gods ... Nature does all things spontaneously, by herself, without the meddling of the gods.

A falling drop at last will carve a stone.