William John Henry Boetckerwas an American religious leader and influential public speaker... (wikipedia)
Your greatness is measured by your kindness; your education and intellect by your modesty; your ignorance is betrayed by your suspicions and prejudices, and your real caliber is measured by the consideration and tolerance you have for others.
You can't fly a kite unless you go against the wind and have a weight to keep it from turning a somersault. The same with man. No man will succeed unless he is ready to face and overcome difficulties and is prepared to assume responsibilities.