The basis of social relationships is reciprocity: if you cooperate with others, others will cooperate with you.
Reciprocity of sensation is not possible because to share is to be robbed.
Tell me who I've got to be, to get some reciprocity
Social peace requires reciprocity.
there is one word that can be the guide for your life- it is the word reciprocity.
Whatever mourns when many leave these shores: Whatever shares The eternal reciprocity of tears.
Love is never wasted, for its value does not rest upon reciprocity.