This quote is saying that death is not something to be feared. It suggests that death is not an end to existence, but that it is a natural part of the cycle of life. The speaker is implying that they believe in some kind of reincarnation, and that death is not an ending, but instead a new beginning. They draw on the example of having been dead for billions of years before they were born and point out that they did not suffer any negative consequences from it. Essentially, this quote is attempting to reassure the listener that death is nothing to fear and should instead be embraced as a natural part of life’s cycle.