It is right that we should stand by and act on our principles; but not right to hold them in obstinate blindness, or retain them when proved to be erroneous.

I have taken your advice and the names used are anode cathode anions cations and ions the last I shall have but little occasion for. I had some hot objections made to them here and found myself very much in the condition of the man with his son and Ass who tried to please every body.

The lecturer should give the audience full reason to believe that all his powers have been exerted for their pleasure and instruction.

Tyndall, ... I must remain plain Michael Faraday to the last; and let me now tell you, that if accepted the honour which the Royal Society desires to confer upon me, I would not answer for the integrity of my intellect for a single year.

What a weak, credulous, incredulous, unbelieving, superstitious, bold, frightened, what a ridiculous world ours is, as far as concerns the mind of man. How full of inconsistencies, contradictions and absurdities it is. I declare that taking the average of many minds that have recently come before me ... I should prefer the obedience, affections and instinct of a dog before it.

I cannot conceive curved lines of force without the conditions of a physical existence in that intermediate space.

Chemistry is necessarily an experimental science: its conclusions are drawn from data, and its principles supported by evidence from facts.