“In all things success depends on previous preparation, and without such previous preparation there is sure to be failure.”

“I am not bothered by the fact that I am not understood. I am bothered when I do not know others.”

“Reviewing what you have learned and learning anew, you are fit to be a teacher.”

“They who know the truth are not equal to those who love it, and they who love it are not equal to those who delight in it.”

“When you have faults, do not fear to abandon them.”

“To see what is right, and not to do it, is want of courage or of principle.”

“A happy life consists not in the absence, but in the mastery of hardships.”

“No doubt the reason is that character cannot be developed in ease and quiet. Only through experience of trial and suffering can the soul be strengthened, vision cleared, ambition inspired, and success achieved.”

“Believe, when you are most unhappy, that there is something for you to do in the world. So long as you can sweeten another's pain, life is not in vain.”

“You gain strength, courage, and confidence by every experience in which you really stop to look fear in the face. You are able to say to yourself, 'I have lived through this horror. I can take the next thing that comes along.' You must do the thing you think you cannot do.”

“You must not lose faith in humanity. Humanity is an ocean; if a few drops of the ocean are dirty, the ocean does not become dirty.”

“Strength does not come from physical capacity. It comes from an indomitable will.”