Discovery follows discovery, each both raising and answering questions, each ending a long search, and each providing the new instruments for a new search.

I think that all things which evoke discipline: study, and our duties to men and to the commonwealth, war, and personal hardship, and even the need for subsistence, ought to be greeted by us with profound gratitude, for only through them can we attain to the least detachment; and only so can we know peace.

I remembered the line from the Hindu scripture, the Bhagavad-Gita... "Now I am become Death, the destroyer of worlds." I suppose we all thought that, one way or another.

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.

We know too much for one man to know too much.

The most beautiful philosophical song existing in any known tongue.