This survival of the fittest implies multiplication of the fittest.

The belief, not only of the socialist but of those so-called liberals who are diligently preparing the way for them is that by due skill an ill working humanity may be framed into well-working initiations. It is delusion. The defective natures of citizens will show themselves in bad acting of whatever social structure they are arranged into. There is no political alchemy by which you can get golden conduct out of laden instincts.

What a cage is to the wild beast, law is to the selfish man.

If a single cell, under appropriate conditions, becomes a man in the space of a few years, there can surely be no difficulty in understanding how, under appropriate conditions, a cell may, in the course of untold millions of years, give origin to the human race.

No one can be perfectly happy till all are happy.

No one can be perfectly free till all are free; no one can be perfectly moral till all are moral; no one can be perfectly happy till all are happy.

Of all the knowledge, that most worth having is knowledge about health! The first requisite of a good life is to be a healthy person.