A man who is certain he is right is almost sure to be wrong.

It is on record that when a young aspirant asked Faraday the secret of his success as a scientific investigator, he replied, 'The secret is comprised in three words- Work, Finish, Publish.'

ou can hardly imagine how I am struggling to exert my poetical ideas just now for the discovery of analogies and remote figures respecting the earth, sun, and all sorts of things — for I think that is the true way (corrected by judgment) to work out a discovery.

The condition of matter I have dignified by the term Electronic, THE ELECTRONIC STATE. What do you think of that? Am I not a bold man, ignorant as I am, to coin words?

When I came to know Mrs. Marcet personally; how often I cast my thoughts backward, delighting to connect the past and the present; how often, when sending a paper to her as a thank you offering, I thought of my first instructress.

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

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