One of the greatest quotes I have come across. Unfortunately I found many different names for the author. :(

The world is your mirror.

The good you find in others, is in you too.

The faults you find in others, are your faults as well.

After all, to recognize something you must know it. 

The possibilities you see in others, are possible for you as well. 

The beauty you see around you, is your beauty. 

The world around you is a reflection, a mirror showing you the person you are. 

To change your world, you must change yourself. 

See the best in others, and you will be your best. 

Give to others, and you will give to yourself. 

Appreciate beauty, and you will be beautiful. 

Admire creativity, and you will be creative. 

Love, and you will be loved. 

Seek to understand, and you will be understood. 

Listen, and your voice will be heard. 

Teach, and you will learn.