Every cell in every living thing comes from another cell that divides. This is the fundamental principle of cell theory.

Here's why:

* Cell division is the process by which a single cell replicates itself, creating two daughter cells.

* This process ensures the continuation of life, as it allows for growth, development, and repair of tissues.

* All living things, from single-celled organisms to complex multicellular creatures, rely on this process.

The statement that every cell comes from another cell is a cornerstone of biology and has been incredibly impactful in our understanding of life.