Within those molecules, 90%+ is empty space, while less than 10% is taken up by atoms. 90%+ of every atom is empty space, less than 10% of that space is taken up by protons, neutrons and electrons. These subatomic particles are made up of quarks with even more empty space between them. Even the rare bits of space that are taken up by stars and planets are 99.9%+ nothing. The closer we get to discovering what we're made of, the more we find out that we're made of nothing.
However, there are tiny pockets of defiance against this nothing which maintain their existence by lying to each other about it; whether this lying comes in the form of gravity, electromagnetism, chemical magnetism, physiological attraction and repulsion, political influence, magic, or some other force, it is a dishonesty that has to perpetrate itself on its surroundings in order to maintain its existence.
If you accept this as truth, I wonder what you will believe when you are eventually convinced that it is a lie.