Could we have entered into the mind of Sir Isaac Newton, and have traced all the steps by which he produced his great works, we might see nothing ver…

- Joseph Priestley

In completing one discovery we never fail to get an imperfect knowledge of others.

- Joseph Priestley

Every man, when he comes to be sensible of his natural rights, and to feel his own importance, will consider himself as fully equal to any other pers…

- Joseph Priestley

The greater part of critics are parasites, who, if nothing had been written, would find nothing to write.

- Joseph Priestley

In completing one discovery we never fail to get an imperfect knowledge of others of which we could have no idea before, so that we cannot solve one …

- Joseph Priestley

The feeling of it to my lungs was not sensibly different from that of common air; but I fancied that my breast felt peculiarly light and easy for som…

- Joseph Priestley

I have procured air [oxygen] ... between five and six times as good as the best common air that I have ever met with.

- Joseph Priestley

It is no use speaking in soft, gentle tones if everyone else is shouting.

- Joseph Priestley

When we say there is a GOD, we mean that there is an intelligent designing cause of what we see in the world around us, and a being who was himself u…

- Joseph Priestley