“[Philosophy] must set limits to what can be thought; and, in doing so, to what cannot be thought. It must set limits to what cannot be thought by working outwards through what can be thought.”

“There must be a limit to the mistakes one person can make, and when I get to the end of them, then I'll be through with them. That's a comforting thought”

“Humble people know their limitations: they know what they know, and they know what they do not know; they know what they can do or be, and they know what they cannot do or be”

“What's thought cannot be unthought.”

“I must be very selfish, she thought, for I want to set nothing and no one right; all I want is to be left in peace to make what I can of this problem called life for myself and my children.”

“The range of what we think and do is limited by what we fail to notice. And because we fail to notice that we fail to notice, there is little we can do to change; until we notice how failing to notice shapes our thoughts and deeds.”