Letter: Single issue that affects all mankind

Sir: It has become fashionable to denigrate those who promote a single issue ('Were we conned?', 16 January), but as William Blake pointed out many years ago, 'General good is the plea of the scoundrel', and 'He who would do good to another must do it in minute particulars.'

Environmentalists are often accused of being single-issue fanatics. This is especially absurd since the environment affects all mankind, not just environmentalists. Those who try to improve our care of the environment, whether by political involvement or by good science, are serving mankind as a whole.

Yours sincerely,

NORMAN MOORE

Swavesey, Cambridge