To laugh often and much; 
To win the respect of intelligent people and the affection of children; 
To earn the appreciation of honest critics and endure the betrayal of false friends; 
To appreciate beauty, 
To find the best in others, 
To leave the world a bit better, whether by a healthy child, 
A garden patch or a redeemed social condition; 
To know even one life has breathed easier because you have lived. 
This is to have succeeded.

–  Ralph Waldo Emerson

Source: Beyondthequote.com