Preposition

1. With the source or provenance of or at.

   This wine comes from France.

   I got a letter from my brother.

2. With the origin, starting point or initial reference of or at.

   He had books piled from floor to ceiling.

   He left yesterday from Chicago.

   Face away from the wall.

3. With the separation, exclusion or differentiation of.

   An umbrella protects from the sun.

   He knows right from wrong.