"A person who doubts himself is like a man who would enlist in the ranks of his enemies and bear arms agains himself. He makes his failure certain by himself being the first person to be convinced of it"

"A failure is a man who has blundered, but is not able to cash in the experience"

"A man may fall many times, but he won't be a failure until he says that someone pushed him"

"Ideas are more powerful than guns. We would not let our enemies have guns, why should we let them have ideas"

"Leadership is solving problems. The day soldiers stop bringing you their problems is the day you have stopped leading them. They have either lost confidence that you can help or concluded you do not care. Either case is a failure of leadership"

"A wise man gets more use from his enemies than a fool from his friends"

"There is no such thing as darkness; only a failure to see"

"The illegal wildlife trade is a symptom of a larger problem. It is a symptom of our society's unsustainable consumption patterns and our failure to live in harmony with the natural world"

"The man of knowledge must be able not only to love his enemies but also to hate his friends"

"Do not fear mistakes. You will know failure. Continue to reach out"

"As our enemies have found we can reason like men, so now let us show them we can fight like men also"