But the people could do a great many things.
They could remember, too, what had happened before.
They learned to profit by their mistakes.
You will learn how they became brave and strong.
You will learn how they used their bodies and minds.
They began the work we are doing to-day.
They took the first steps.
People who lived after them were able to do a little more.
The next people could do still more.
Many people have lived and worked since then.