To him [Faraday], as to all true philosophers, the main value of a fact was its position and suggestiveness in the general sequence of scientific tru… - John Tyndall

It is as fatal as it is cowardly to blink facts because they are not to our taste.

We ought not to judge superior men without reference to the spirit of their age. This is an influence from which they cannot escape, and so far as it extenuates their errors it ought to be pleaded in their favour.

[T]he enunciation of a thought in advance of the moment provokes dissent or evokes approval, and thus promotes action. The thought may be unwise; but it is only by discussion, checked by experience, that its value can be determined.