“Being teachable requires two things: Capacity and attitude.”

“What I believe is that all clear-minded people should remain two things throughout their lifetimes: Curious and teachable.”

“Mental attitude is more important than mental capacity”

“Most human beings have an almost infinite capacity for taking things for granted.”

“These persons all have two souls, two beings within them. There is God and the devil in them; the mother's blood and the father's; the capacity for happiness and the capacity for suffering; and in just such a state of enmity and entanglement towards and within each other as were the wolf and man in Harry.”

“Success or failure in business is caused more by mental attitude even than by mental capacity.”

“The ancients, persuaded that there is no body without a moving force, regarded the substance of bodies as composed of two primitive attributes. It was held that, through one of these attributes, this substance has the capacity for moving and, through the other, the capacity for being moved.”

“The growing pains of … being an actor, that was a little frustrating at times because you feel like you have great capacity to do many things. And yet there seems to be a misunderstanding about who you are and what you're trying to do. And that requires patience, and people eventually will understand.”

“Psychological or spiritual development always requires a greater capacity for anxiety and ambiguity.”

“Leadership requires two things: a vision of the world that does not yet exist and the ability to communicate it.”