“Science has done more for the development of western civilization in one hundred years than Christianity did in eighteen hundred years.”

“The human tendency to regard little things as important has produced very many great things”

“A good metaphor is something even the police should keep an eye on”

“If you think you can do it, you can.”

“We gain nothing by being with such as ourselves. We encourage one another in mediocrity. I am always longing to be with men more excellent than myself”

“You must have the bird in your heart before you can find it in the bush.”