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

But it is not given to every electrician to die in so glorious a manner as the justly envied Richmann.

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 some time afterwards. Who can tell but that, in time, this pure air may become a fashionable article in luxury. Hitherto only two mice and myself have had the privilege of breathing it.

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

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 doubt without creating several new ones.

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

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