A centre of excellence is, by definition, a place where second class people may perform first class work.

I could trust a fact and always cross-question an assertion.

Nothing is to wonderful to be true.

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

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

It may be a weed instead of a fish that, after all my labour, I at last pull up.

Who would not have been laughed at if he had said in 1800 that metals could be extracted from their ores by electricity or that portraits could be drawn by chemistry.

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.

... and what good is a baby?

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

Work, finish, publish.

Why will people go astray when they have this blessed Book to guide them?

I can at any moment convert my time into money, but I do not require more of the latter than is sufficient for necessary purposes.

Speculations? I have none. I am resting on certainties.

Nothing is ever too good to be true.

I shall be with Christ, and that is enough.

The important thing is to know how to take all things quietly.

Nature is our kindest friend and best critic in experimental science if we only allow her intimations to fall unbiased on our minds.

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.