Some of the gold possessed by the Romans is doubtless mixed with what we now possess; and some small part of it will be handed down as long as the hu… - William Stanley Jevons

Truth indeed is sacred; but, as Pilate said, "What is truth?" Show us the undoubted infallible criterion of absolute truth, and we will hold it as a sacred inviolable thing. But in the absence of that infallible criterion, we have all an equal right to grope about in our search of it, and no body and no school nor clique must be allowed to set up a standard of orthodoxy which shall bar the freedom of scientific inquiry.

but, in reality, there is no such thing as an exact science.

One of the first and most difficult steps in a science is to conceive clearly the nature of the magnitudes about which we are arguing.