Philosophy lives in words, but truth and fact well up into our lives in ways that exceed verbal formulation.

(Five) thinkers since Galileo, each informing his successor of what discoveries his own lifetime had seen achieved, might have passed the torch of science into our hands as we sit here in this room. Indeed, for the matter of that, an audience much smaller than the present one, an audience of some 5 or 6 score people, if each person in it could speak for his own generation, would carry us away to the black unknown of the human species, to days without a document or monument to tell their tale.

With no attempt there can be no failure; with no failure no humiliation.

Our theories are wedged and controlled as nothing else is. Yet sometimes alternative theoretic formulas are equally compatible with all the truths we know, and then we choose between them for subjective reasons. We choose the kind of theory to which we are already partial: we follow 'elegenace' or 'economy'

... I am the same personal being who in old times upon the Earth had those experiences.

It is well for the world that in most of us, by the age of thirty, the character has set like plaster, and will never soften again.

If you only care enough for a result, you will almost certainly attain it. Only you must, then, really wish these things, and wish them exclusively, and not wish at the same time a hundred other incompatible things just as strongly.