People say to live in the present, but that is impossible. Everything we say, do, and see is in the past. It takes fractions of seconds for our senses to transmit information to the human brain, be processed, and be registered. Also, everything you see is a couple nanoseconds behind when it happened, since light moves at a speed of approximately 1 foot per nanosecond. Also, the world is nothing, literally. 99% of all matter is empty space, due to atoms also being mostly empty space. Electrons just buzz around the nucleus nearly at the speed of light, not letting things through, making it "solid", But in reality, all perceived time and space is nothing.