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.

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

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

Orthodoxy, my Lord,: said Bishop Warburton, in a whisper, — orthodoxy is my doxy, — heterodoxy is another man's doxy.

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.

The wisdom of one generation will be folly in the next.

Will is nothing more than a particular case of the general doctrine of association of ideas, and therefore a perfectly mechanical thing.