QUOTE : If we can keep that flexibility of mind, that hospitality toward new ideas, we will be able to welcome the new flow of thought from wherever it comes, not resisting it; weighing and evaluating and exploring the strange new concepts that confront us at every turn. We cannot shut the windows and pull down the shades; we cannot say, “I have learned all I need to know; my opinions are fixed on everything. I refuse to change or to consider these new things.” Not today. Not any more.