Why did Einstein not start a new generation of humans

So i learned here today how evolution works, and Einstein evolved to be more intelligent, he could of start a whole new generation of highly intelligent beings
Why did he not evolve the human raze to be more intelligent

You may have learned it, but you obviously don't understand how evolution works

einstein didn't evolve to be intelligent, an individual can't evolve.
A population can evolve

Because that is not how evolution works.