A man is ethical only when life, as such, is sacred to him, that of plants and animals as that of his fellow men, and when he devotes himself helpfully to all life that is in need of help.

A man is really ethical only when he obeys the constraint laid on him to help all life which he is able to succor, and when he goes out of his way to avoid injuring anything living. He does not ask how far this or that life deserves sympathy as valuable in itself, nor how far it is capable of feeling. To him life as such is sacred. He shatters no ice crystal that sparkles in the sun, tears no leaf from its tree, breaks off no flower, and is careful not to crush any insect as he walks. If he works by lamplight on a summer evening, he prefers to keep the window shut and to breathe stifling air, rather than to see insect after insect fall on his table with singed and sinking wings. If he goes out in to the street after a rainstorm and sees a worm which has strayed there, he reflects that it will certainly dry up in the sunshine, if it does not quickly regain the damp soil into which it can creep, and so he helps it back from the deadly paving stones into the lush grass. Should he pass by an insect which has fallen into a pool, he spares the time to reach it a leaf or stalk on which it may clamber and save itself.

...man is the animal that moralizes. Man is also the animal that complains about being one, and says that there is an animal, a beast inside him — that he is brother to dragons. (He is certainly a brother to wolves, and to pandas too, but he is father to dragons, not brother: they, like many gods and devils, are inventions of his.)

Man is a rational animal. So at least we have been told. Throughout a long life I have searched diligently for evidence in favor of this statement. So far, I have not had the good fortune to come across it.

Man is the Reasoning Animal. Such is the claim. I think it is open to dispute.

Man is a political animal in certain societies, but it is also an emotional and imaginative animal in any context. Its spirituality is a lot more powerful and omnipresent than politics. My characters might be influenced by political events, but politics isn’t what governs in their lives, but spirituality. A citizen in any Western country could describe themselves as a political animal”; but a druid priest, masai or pygmy in Africa, an indigenous person from the Caribbean in pre-historic times or even the Amazon today, doesn’t follow these parameters. According to these cultures, the spirit and emotions are a lot more important.

Man is a rational animal, and if human affairs are hard to regulate, his twofold nature is usually the cause. Reason is something ultimate; it would be the same in another planet, or in another universe, as it is here. Animal nature is something contingent; it might have been different. Our life is a compromise, a blend between the animal and the rational.

Man is said to be a reasoning animal. I do not know why he has not been defined as an affective or feeling animal. Perhaps that which differentiates him from other animals is feeling rather than reason. More often I have seen a cat reason than laugh or weep. Perhaps it weeps or laughs inwardly — but then perhaps, also inwardly, the crab resolves equations of the second degree.

Man has been called the reasoning animal but he could with greater truthfulness be called the creature of suggestion. He is reasonable, but he is to a greater extent suggestible.

It has been said that man is a rational animal; while this formulation is insufficient and ill-sounding, it nonetheless points to an undeniable truth, though in an elliptical fashion, for the rational faculty actually serves to underscore the transcendence of man in relation to the animal. Man is rational because he possesses the Intellect, which by definition has a capacity for the absolute and therefore a sense of the relative; and he possesses the Intellect because he is made "in the image of God", which, moreover, he demonstrates physically by his corporeal form and his cranial form, as well as by his vertical posture, then by language and his productive capacity. Man is a theophany in his form as much as in his faculties.

Man is a political animal. A man who lives alone is either a Beast or a God

Man is a tragic animal. Not because of his smallness, but because he is too well endowed. Man has longings and spiritual demands that reality cannot fulfill. We have expectations of a just and moral world. Man requires meaning in a meaningless world.

Man is a Religious Animal. He is the only Religious Animal. He is the only animal that has the True Religion — several of them. He is the only animal that loves his neighbor as himself and cuts his throat if his theology isn't straight.

Man is a rational animal – so at least I have been told. Throughout a long life, I have looked diligently for evidence in favor of this statement, but so far I have not had the good fortune to come across it, though I have searched in many countries spread over three continents.