“you are not an accident. you come from a long chain that kept going. take the next small step today.”
— Bill Bryson
From A Short History of Nearly Everything (2003), Chapter 30. Bryson's summary of the statistical impossibility of any individual's existence.
I spent three years reading about the universe. The fact that hit me hardest: you are here. The odds against your existence cannot be written down. Every ancestor survived long enough to pass on exactly the right combination. One different moment, one different choice, and someone else would be reading this. You are not ordinary. You are astronomically improbable. Act like it.