Pierre Ceresole said this quote

If the gooseberry said: 'I haven't the heart to be a real proper gooseberry because if everyone were a gooseberry the world wouldn't continue to exist' this would be a stupid argument and the world would be deprived of a useful fruit. If you are called upon to be a 'gooseberry' in all the senses--pleasant or ludicrous--of the word, you should be one with all your heart and soul, without a backward glance.

~ Pierre Ceresole