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.

But still try, for who knows what is possible?

Physicist is both to my mouth and ears so awkward that I think I shall never use it. The equivalent of three separate sounds of "I" in one word is too much.

Nothing is ever too good to be true.

I have far more confidence in the one man who works mentally and bodily at a matter than in the six who merely talk about it.

There is no more open door by which you can enter into the study of natural philosophy than by considering the physical phenomena of a candle

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