Those who are near me do not know that you are nearer to me than they are
Those who speak to me do not know that my heart is full with your unspoken words
Those who crowd in my path do not know that I am walking alone with you
They who love me do not know that their love brings you to my heart.
--Rabindranath Tagore (1861-1941).
If you know the original Bengali source of this quotation, could you please send it to me?