con·science [ kónshənss ]
sense of right and wrong
"A [young] man who has nothing to do with his own time
has no conscience in his intrusion on that of others."
Sense and Sensibility
Marianne, Chapter 31
I found this one particularly important for teenage young men. The following says it all. Don't settle ... Do Hard Things
"Without a doubt, pushing yourself to do more than is asked, expected or required is nearly always a lonely choice."
Do Hard Things
Alex & Brett Harris
"I wish to preach, not the doctrine of ignoble ease, but the doctrine of the strenuous life, the life of effort, of labor and [trouble]; to preach that highest form of success which comes, not to the man who desires mere easy peace, but to the man who does not shrink from danger, from hardship, or from bitter toil, and who out of these, wins the splendid ultimate triumph."
- Theodore Roosevelt 'thoughts on the strenuous life'
From My Heart to Yours,