“The race moves on. It has its human limitations. The tools we make have no limitations at all. When we educate ourselves to learn to handle those tools most efficiently we can go on to the next step, whatever it may be. Meanwhile there must be check and balance—rigid control.”

“There are a number of ways by which the Federal Government can meet its responsibilities to aid economic growth. We can and must improve American education and technical training. We can and must expand civilian research and technology. One of the great bottlenecks for this country's economic growth in this decade will be the shortage of doctorates in mathematics, engineering, and physics; a serious shortage with a great demand and an under-supply of highly trained manpower. We can and must step up the development of our natural resources. But the most direct and significant kind of Federal action aiding economic growth is to make possible an increase in private consumption and investment demand--to cut the fetters which hold back private spending. In the past, this could be done in part by the increased use of credit and monetary tools, but our balance of payments situation today places limits on our use of those tools for expansion. It could also be done by increasing Federal expenditures more rapidly than necessary, but such a course would soon demoralize both the Government and our economy. If Government is to retain the confidence of the people, it must not spend more than can be justified on grounds of national need or spent with maximum efficiency.”

“The most important experiences a man can have are those that take him to the very limit; that is the only way we learn, because it requires all our courage.”

“I see that we must strike a balance. We have nearly reached the limit of our powers of resistance. The war must be ended.”

“When… we have a series of values of a quantity which continually diminish, and in such a way, that name any quantity we may, however small, all the values, after a certain value, are severally less than that quantity, then the symbol by which the values are denoted is said to diminish without limit. And if the series of values increase in succession, so that name any quantity we may, however great, all after a certain point will be greater, then the series is said to increase without limit. It is also frequently said, when a quantity diminishes without limit, that it has nothing, zero or 0, for its limit: and that when it increases without limit it has infinity or ∞ or 1⁄0 for its limit.”

“We choose our next world through what we learn in this one. Learn nothing, and the next world is the same as this one, all the same limitations and lead weights to overcome.”

“When you come after Americans, we go after you. It may take time, but we have long memories, and our reach has no limit.”

“Now, surely, when we want to educate ourselves for the purpose of citizenship…If you can clear the mind of cant and detect the fallacy, whatever guise it may be wearing, I think you have made a long step forward in the education that every citizen in a democracy that may hope to endure must have. I think that we all of us realise to-day that no civilised community is bound necessarily and by an inscrutable fate to progress, and there are such things in civilisation as checks, that there is such a thing as retrogression, and that the mere existence of a civilised community is no guarantee either for its continuance or for its progress— in other words, that unless we are the faithful guardians of such civilisation as we have already attained to, we run the risk of seeing the whole of the progress that has been made with such infinite labour up to our own time gradually slipping back and back and back.”

“The only limitations are those which we impose upon ourselves.”

“We don't have enough knowledge until we learn to know. But the limitations of humanity prevent us from knowing what is unknown and what is beyond reasoning. That is why we cannot rely entirely on ourselves.”