I hold with Henry George, that at the back of every great social evil will be found a great political wrong.

What birds can have their bills more peculiarly formed than the ibis, the spoonbill, and the heron?

To expect the world to receive a new truth, or even an old truth, without challenging it, is to look for one of those miracles which do not occur.

Truth is born into this world only with pangs and tribulations, and every fresh truth is received unwillingly.

To the mass of mankind religion of some kind is a necessity.

To say that mind is a product or function of protoplasm, or of its molecular changes, is to use words to which we can attach no clear conception.

I am decidedly of the opinion that in very many instances we can trace such a necessary connexion, especially among birds, and often with more complete success than in the case which I have here attempted to explain.

I spent, as you know, a year and a half in a clergyman's family and heard almost every Tuesday the very best, most earnest and most impressive preacher it has ever been my fortune to meet with, but it produced no effect whatever on my mind.

It has been generally the custom of writers on natural history to take the habits and instincts of animals as the fixed point, and to consider their structure and organization as specially adapted to be in accordance with them.

On the spiritual theory, man consists essentially of a spiritual nature or mind intimately associated with a spiritual body or soul, both of which are developed in and by means of a material organism.

In all works on Natural History, we constantly find details of the marvellous adaptation of animals to their food, their habits, and the localities in which they are found.

I hold with Henry George, that at the back of every great social evil will be found a great political wrong.

I am thankful I can see much to admire in all religions.

Civilisation has ever accompanied emigration and conquest - the conflict of opinion, of religion, or of race.

There is, I conceive, no contradiction in believing that mind is at once the cause of matter and of the development of individualised human minds through the agency of matter.

What we need are not prohibitory marriage laws, but a reformed society, an educated public opinion which will teach individual duty in these matters.

But naturalists are now beginning to look beyond this, and to see that there must be some other principle regulating the infinitely varied forms of animal life.

As well might it be said that, because we are ignorant of the laws by which metals are produced and trees developed, we cannot know anything of the origin of steamships and railways.

The foregoing considerations lead us to the very important conclusion, that matter is essentially force, and nothing but force; that matter, as popularly understood, does not exist, and is, in fact, philosophically inconceivable.

In my solitude I have pondered much on the incomprehensible subjects of space, eternity, life and death.

I have since wandered among men of many races and many religions.

If this is not done, future ages will certainly look back upon us as a people so immersed in the pursuit of wealth as to be blind to higher considerations.

Modification of form is admitted to be a matter of time.

Boldness and decision command, often even in evil, the respect and concurrence of mankind.

For those whose wit becomes the mother of villainy, those it educates to be evil in all things.

Words - so innocent and powerless as they are, as standing in a dictionary, how potent for good and evil they become in the hands of one who knows how to combine them.

Some things must be good in themselves, else there could be no measure whereby to lay out good and evil.

Destroy the seed of evil, or it will grow up to your ruin.

Once to every person and nation come the moment to decide. In the conflict of truth with falsehood, for the good or evil side.

Into every soul, however purged and fenced, evil appears to have as much freedom of entrance as God Himself.

What I have learned from my work up to now, is to try to be open, but also protect myself by not letting the good and the evil get too much importance.

Mankind is not likely to salvage civilization unless he can evolve a system of good and evil which is independent of heaven and hell.

One who is injured ought not to return the injury, for on no account can it be right to do an injustice; and it is not right to return an injury, or to do evil to any man, however much we have suffered from him.

The 20th century taught us how far unbridled evil can and will go when the world fails to confront it. It is time that we heed the lessons of the 20th century and stand up to these murderers. It is time that we end genocide in the 21st century.

Every war results from the struggle for markets and spheres of influence, and every war is sold to the public by professional liars and totally sincere religious maniacs, as a Holy Crusade to save God and Goodness from Satan and Evil.

A great book is like great evil.

May the forces of evil become confused on the way to your house.

Be assured those will be thy worst enemies, not to whom thou hast done evil, but who have done evil to thee. And those will be thy best friends, not to whom thou hast done good, but who have done good to thee.

Hatred is gained as much by good works as by evil.

Neither gods nor men can foresee when an evil deed will bear its fruit.

Wisdom is the knowledge of good and evil, not the strength to choose between the two.

I am in politics because of the conflict between good and evil, and I believe that in the end good will triumph.

Every Christian will allow that sin is an evil, and that it is our duty not to commit sin.

But other vampire stories? Well, no, I really haven't read too many, and I can't say I'm crazy about romantic vampires anyway - to me the vampire is simply an evil monster.

We all agree that we've got to bring these terrorists to justice and to make sure that they're never allowed to perpetrate such an evil act as they did. And so all of us are dealing with that. We know that the President has the authority to go to war under the War Powers Act.

A resolution to avoid an evil is seldom framed till the evil is so far advanced as to make avoidance impossible.

Idleness among children, as among men, is the root of all evil, and leads to no other evil more certain than ill temper.

Example moves the world more than doctrine. The great exemplars are the poets of action, and it makes little difference whether they be forces for good or forces for evil.

However things may seem, no evil thing is success and no good thing is failure.