From Observation: Every man his own University by Russell H. Conwell
“Living for self is suicide; men that are men get far greater enjoyment and far greater reward from making life a blessing for those who come their way than they get from all other things combined. No man lives to truly for himself as he who lives for other people, and one of the chiefest purposes of education is that it gives larger views of life and adds greater power to serve humanity. The man who is really in earnest to make his life count is studiously observant. Each day and each place multiplies his means of happiness for himself and others” (pg. 167)