You do not really understand something unless you can explain it to your grandmother.

Variant: If you can't explain something to a six-year-old, you really don't understand it yourself.

Often attributed to Albert Einstein

Anonymous Quotes

You do not really understand something unless you can explain it to your grandmother.

You do not really understand something unless you can explain it to your grandmother.

You do not really understand something unless you can explain it to your grandmother.

You do not really understand something unless you can explain it to your grandmother.