A common criticism is that the time is not yet ripe for our reform

A common criticism is that the time is not yet ripe for our reform. Can time ever be ripe for any reform unless it is ripened by human determination? Did Wilberforce wait for the “ripening” of time before he commenced his fight against slavery? Did Edwin Chadwick, Lord Shaftesbury, and Charles Kingsley wait for such a non-existent moment before trying to convince the great dead weight of public opinion that clean water and bathrooms would be an improvement? If they had declared their intention to poison everybody the opposition they met could hardly have been greater. There is an obvious danger in leaving the fulfilment of our ideals to posterity, for posterity may not have our ideal. Evolution can be retrogressive as well as progressive, indeed there seems always to be a strong gravitation the wrong way unless existing standards are guarded and new visions honoured. For this reason we have formed our [Vegan] Group, the first of its kind, we believe, in this or any other country.
~ Donald Watson (November, 1944)

The negro would appear to stand on a lower evolutionary plane than the white man

NEGRO, the designation of the distinctly dark-skinned, as opposed to the fair, yellow and brown variations of mankind … . The negro would appear to stand on a lower evolutionary plane than the white man, and to be more closely related to the highest anthropoid.
~ Encyclopaedia Britannica (1911)

The influence of economic motives on the action of mankind

If the influence of economic motives on the action of mankind ever had a clearer illustration it was in the modern history of the African race, and particularly in America.

I still saw slavery and the [slave] trade as chiefly a result of moral lassitude … . But apparently I did not clearly see that the real difficulty rested in the willingness of a privileged class of Americans to get power and comfort at the expense of degrading a class of black slaves, by not paying them what their labor deserved.
~ W.E.B. Du Bois (1954)

Our present civilization is built on the exploitation of animals

We can see quite plainly that our present civilization is built on the exploitation of animals, just as past civilisations were built on the exploitation of slaves, and we believe that spiritual destiny of man is such that in time he will view with abhorrence the idea that men once fed on the products of animal’s bodies.
~ Donald Watson (November, 1944)

But justice is usually labeled as radical while injustice is often accepted as the standard

But justice is usually labeled as radical while injustice is often accepted as the standard. Yet we remember that once slavery in America was not seen as radical. It became, instead, a revolutionary idea that slaves should be freed. When we have lived under a pernicious power long enough, no matter how oppressive, we grow so accustomed to the yoke that its removal seems frightening, even wrong.
~ Gerry Spence (April 15, 1996)

But veganism is one thing and one thing only

There are several roads to veganism and many individual views of it, but veganism is one thing and one thing only—a way of living which avoids exploitation whether it be of our fellow men, the animal population, or the soil upon which we all rely for our very existence.
~ Eva Batt (1964)