Love cannot be wasted. It makes no difference where it is bestowed, it always brings in big returns. –Author unknown. 

The best gifts are tied with heartstrings.  –Author unknown 

We may give without loving, but we cannot love without giving.  –Bernard Meltzer 

We cannot hold a torch to light another’s path without brightening our own. –Ben Sweetland 

Blessed are those who can give without remembering and receive without forgetting. –Elizabeth Bibesco 

One of the most difficult things to give away is kindness, for it is usually returned. –Mark Ortman 

Charity gives itself rich; covetousness hoards itself poor. — German proverb 

It is possible to give away and become richer. It is also possible to hold on too tightly and lose everything. — The Bible

Nothing the heart gives away is lost; it is kept in the hearts of others. –Robin St. John, adapted  

Seldom can a heart be lonely
If it seeks a lonelier still,       
Self-forgetting, seeking only        Emptier cups of love to fill!   
   — Frances Ridley Havergal. 

The hand that gives, gathers.  –Latin proverb. 

One candle can light a thousand others without diminishing its light. –Hillel