The suppression of uncomfortable ideas may be common in religion and politics, but it is not the path to knowledge; it has no place in the endeavor o… - Carl Sagan

The American system of jurisprudence recognizes a wide range of factors, predispositions, prejudices, and experiences that might cloud our judgment, or affect our objectivity — sometimes even without our knowing it. It goes to great, perhaps even extravagant, lengths to safeguard the process of judgment in a criminal trial from the human weaknesses of those who must decide on innocence or guilt. Even then, of course, the process sometimes fails. Why would we settle for anything less when interrogating the natural world, or when attempting to decide on vital matters of politics, economics, religion, and ethics? — If it is to be applied consistently, science imposes, in exchange for its manifold gifts, a certain onerous burden: We are enjoined, no matter how uncomfortable it might be, to consider ourselves and our cultural institutions scientifically — not to accept uncritically whatever we’re told; to surmount as best we can our hopes, conceits, and unexamined beliefs; to view ourselves as we really are. Can we conscientiously and courageously follow planetary motion or bacterial genetics wherever the search may lead, but declare the origin of matter or human behavior off-limits? Because its explanatory power is so great, once you get the hang of scientific reasoning you’re eager to apply it everywhere. However, in the course of looking deeply within ourselves, we may challenge notions that give comfort before the terrors of the world.

Books break the shackles of time. A book is proof that humans are capable of working magic.

A blade of grass is a commonplace on Earth; it would be a miracle on Mars. Our descendants on Mars will know the value of a patch of green. And if a blade of grass is priceless, what is the value of a human being?