I have seen the symbol of infinity carved into a stone brick on the outside of a Byzantine church in Athens. In one side of the loop there's a vine leaf and in the other, a bunch of grapes. Perhaps one could conjecture that drinking wine makes one philosophical.
The stone had been taken from an ancient Greek temple along with many other stones with symbols including the symbol of the Illuminati. I thought it was very interesting. I see the Christian church as a usurper of other religions, while my guide suggested they were integrating the symbols out of respect for the ancient world.
Wikipedia says the infinity symbol was introduced in 1655 made from the Roman symbol for 1000 - CƆ, which was sometimes used to mean many. May be John Wallis saw the same stone as me whilst drinking wine and came up with the mathematical idea of infinity.
For the past few years I have been working on the idea of keeping a balanced mind, like a set of scales. Good & bad things can happen, we feel positive & negative emotions. I see the good/bad, positive/negative like a wave moving up and down along the line, the balanced mind doesn't waver, the true self isn't affected by the positive/negative, though we feel the emotions.
Being a line, it stretches into the past and continues into the future, I guess it could go on infinitely, I haven't looked that far. I usually see it with a starting point and an ending point.
Think of the infinity symbol. It moves like a wave, it rises up then down, crosses at the center point, rises up and down and crosses at the center point again, just like the waves of positive & negative, good & bad except infinity doesnt move along a line, it moves around a point.
That point is the present. It is the only moment we ever have. Whatever good that happens has to be balanced by bad, whatever negative emotions we feel will be balanced by positive and always we are the pivotal center and in our present moment.
In meditation our thoughts may rise and fall but we need to constantly return them to the center focus point.
That center focus point of infinity is the center of emptiness. It is the nothingness. It is the point from which everything expands and forms.
There is a whole universe, full of infinite things. Our world is infinitely full of things. It is so full of things you could never have them all. Wanting things will only make you want more things. Following the loops of the symbol you will get more and then you will get less.
But if you stay in the center, in the point around which everything revolves then you will give up wanting anything, you will give up desire. You will be in harmony with infinity and the universe will revolve peacefully around you.
Infinity is forever, it is all our lives past and future with your true self living now.
Infinity is the vastness of space and time. From before there was nothing till after there is everything, infinity will still go on.