Long before the existence of humankind life has already existed but not made of flesh and bones but as an "Energy". There is no way of determining "The Time or Period" since that energy has never been or cannot be subjected to "Time" which mean their existence is Infinity that is "No beginning or Ending", therefore the time or number of years cannot be used because those "Life Energy" are not subjected to time, they had been and will exist up to Infinity. Their numbers or as to how many they are is "Constant" which mean they cannot multiply and they no sex or they are not made of male or female.

The "Life Energy" is composed of positive and negative and there are two types of them. One is made of 100% positive energy and the other one is compose of positive and negative energy because it is not possible to be 100% negative. The being who is 100% positive is characterized by being "Selfless and All Goodness" while the being who is composed of positive and negative are "Selfish and Greedy". A being who is selfish and greedy is not absolutely so because he is not 100% negative because it is not possible but may compose of 99% negative and 1% positive and which may mean he could be "Transformed" into 100% positive energy. The composition will be from 99% negative to 1% positive; 90% negative and 10% positive, or 50% negative and 50% positive and vice versa. Therefore their being selfish and greedy may vary accordingly.

Aside from the positive and negative energy, there is also the third energy in which I will call as the "Love Energy". The Love Energy will enable or is only possible  for the negative energy to be transformed into the positive energy but has the full and absolute freedom to go back into the negative energy, that is by "Rejecting the Love Energy" he has just or recently or previously accepted.

The beings who are 100% positive energy being Selfless is willing to sacrifice and endure all the pains and agony just to make everything in the "Universe" in its "Proper Orderliness" which mean there are other beings who are not 100% positive were not cooperating with them. It is because the beings who are 100% positive perceives that the "Meaning of Life" is absolutely being "Selfless and All Goodness". While the other beings are in the "Other World", the materialistic world because life for them is "Selfishness and Greediness". Which mean there are "Two Different Worlds". And there are also two meanings of "Existence". But the "True Meaning of Life" is being selfless and all goodness.