Plants, again, inasmuch as they are without locomotion, present no great variety in their heterogeneous pacts. For, when the functions are but few, few also are the organs required to effect them. ... Animals, however, that not only live but perceive, present a great multiformity of pacts, and this diversity is greater in some animals than in others, being most varied in those to whose share has fallen not mere life but life of high degree. Now such an animal is man.
Compassion for animals is intimately associated with goodness of character, and it may be confidently asserted that he who is cruel to animals cannot be a good man.
If there is any kind of animal which is female and has no male separate from it, it is possible that this may generate a young one from itself. No instance of this worthy of any credit has been observed up to the present at any rate, but one case in the class of fishes makes us hesitate. No male of the so-called erythrinus has ever yet been seen, but females, and specimens full of roe, have been seen. Of this, however, we have as yet no proof worthy of credit.
Man is an essentially superstitious and fearful animal. Take away the herd's Christian gods and saints and they will without failing come to worship...something else.
Well has it been said that man is the only animal that naturally looks upwards; every other animal naturally looks down. That looking upward and going upward and seeking perfection are what is called salvation; and the sooner a man begins to go higher, the sooner he raises himself towards this idea of truth as salvation.
If chimpanzees have consciousness, if they are capable of abstractions, do they not have what until now has been described as 'human rights'? How smart does a chimp have to be before killing him constitutes murder?
I am not interested to know whether vivisection produces results that are profitable to the human race or doesn't...The pain which it inflicts upon unconsenting animals is the basis of my enmity toward it, and it is to me sufficient justification of the enmity without looking further.
For the real difference between humans and other animals is that humans alone have perception of good and evil, just and unjust, etc. It is the sharing of a common view in these matters that makes a household and a state.
It is very doubtful whether man is enough of a political animal to produce a good, sensible, serious and efficient constitution. All the evidence is against it.
. . . it is difficult for Europeans to appreciate the sentiment. Other nations kill animals by wholesale and kill one another; they exist in a sea of blood. A European said that the reason why in India animals were not killed was because it was supposed that they contained the spirits of ancestors. This reason was worthy of a savage nation who are not many steps from the brute.
If the bee disappeared off the surface of the globe, then man would have only four years of life left. No more bees, no more pollination, no more plants, no more animals, no more man.
Consider the cattle, grazing as they pass you by. They do not know what is meant by yesterday or today, they leap about, eat, rest, digest, leap about again, and so from morn till night and from day to day, fettered to the moment and its pleasure or displeasure, and thus neither melancholy nor bored. [...] A human being may well ask an animal: 'Why do you not speak to me of your happiness but only stand and gaze at me?' The animal would like to answer, and say, 'The reason is I always forget what I was going to say' - but then he forgot this answer too, and stayed silent.