Henry Sidgwick quotes

I may begin by laying down as a principle that ‘all pain of human or rational beings is to be avoided'; and then afterwards may be led to enunciate the wider rule that ‘all pain is to be avoided'; it being made evident to me that the difference of rationality between two species of sentient beings is no ground for establishing a fundamental ethical distinction between their respective pains. (Henry Sidgwick)
The good of any one individual is of no more importance, from the point of view (if I may so say) 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 than in the other. View quote
Henry Sidgwick
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. View quote
Henry Sidgwick
A universal refusal to propagate the human species would be the greatest of conceivable crimes from a Utilitarian point of view. View quote
Henry Sidgwick