Youth doesn't take advice.
Restlessness is discontent and discontent is the first necessity of progress. Show me a thoroughly satisfied man and I will show you a failure.
The perils of overwork are slight compared with the dangers of inactivity.
The man who doesn’t make up his mind to cultivate the habit of thinking misses the greatest pleasure in life.
Before you reject an idea, find at least five good things about it.
Work while others are wishing.