In short, if a certain quality of human Life is that which is…

We have next to consider who the “all” are, whose happiness is to be taken into account. Are we to extend our concern to all the beings capable of pleasure and pain whose feelings are affected by our conduct?

the time at which a man exists can’t affect the value of his happiness from a universal point of view; so the interests of posterity must concern a utilitarian as much as those of his contemporaries

The good of any one individual is of no more importance, from the point of view...of the Universe, than the good of any other; unless, that is, there are special grounds for believing that more good is likely to be realized in the one case …

Each person is morally obliged to regard the good of anyone else as much as his own good, except when he judges it to be less, when impartially viewed, or less certainly knowable or attainable by him.

it seems arbitrary and unreasonable to exclude from the end, as so conceived, any pleasure of any sentient being.

A universal refusal to propagate the human species would be the greatest of conceivable crimes from a Utilitarian point of view