Life must be considered sui generis; it is not a form of energy, nor can it be expressed in terms of something else. - Oliver Lodge

The oldest and best known function for an ether is the conveyance of light, and hence the name "luminiferous" was applied to it, though at the present day many functions are known, and more will almost certainly be discovered.

Motion and force are our primary objects of experience and consciousness; and in terms of them all other less familiar occurrences may conceivably be studied and grasped.

It is not the germ cell itself, but the bodily accretion or appendage, which is abandoned by life, and which accordingly, dies and decays.