Cowards die many times before their deaths' is a famous quote by-

William Shakespeare, English poet, dramatist, and actor often called the English national poet and considered by many to be the greatest dramatist of all time.
Some of his famous quotes are-
-Cowards die many times before their deaths
-To be, or not to be: that is the question
-There is nothing either good or bad, but thinking makes it so.
Source: britannica