"Freedom and order are not incompatible... truth is strength... free discussion is the very life of truth."

"It is one of the most saddening things in life that, try as we may, we can never be certain of making people happy, whereas we can almost always be certain of making them unhappy."

"In science, as in art, and, as I believe, in every other sphere of human activity, there may be wisdom in a multitude of counsellors, but it is only in one or two of them."

"Sit down before fact as a little child, be prepared to give up every conceived notion, follow humbly wherever and whatever abysses nature leads, or you will learn nothing."

"The foundation of joy is hope is the anchor of a weary soul."

"Even if I knew that tomorrow the world would go to pieces, I would still plant my apple tree."

"I hope America can also be the cultural leader of the world, and use this frontier spirit to lead and show others that we need courage to go places where we have not gone before."

"To walk the path of enlightenment means the canvas of tomorrow is painted with the actions of today."