Maybe General Groves was right. Maybe we should just banish thinking forever.

It is a profound and necessary truth that the deep things in science are not found because they are useful; they are found because it was possible to find them.

There is something irreversible about acquiring knowledge; and the simulation of the search for it differs in a most profound way from the reality.

In the material sciences these are and have been, and are most surely likely to continue to be heroic days.

Both the man of science and the man of art live always at the edge of mystery, surrounded by it. Both, as a measure of their creation, have always had to do with the harmonization of what is new with what is familiar, with the balance between novelty and synthesis, with the struggle to make partial order in total chaos.... This cannot be an easy life.

It is perfectly obvious that the whole world is going to hell. The only possible chance that it might not is that we do not attempt to prevent it from doing so.

All history teaches us that these questions that we think the pressing ones will be transmuted before they are answered, that they will be replaced by others, and that the very process of discovery will shatter the concepts that we today use to describe our puzzlement.