I was convinced — and I am so still — that the fundamental principles of Christianity have to be proved true by reasoning, and by no other method. Re… - Albert Schweitzer

A man does not have to be an angel to be a saint.

All acts and facts are a product of spiritual power, the successful ones of power which is strong enough; the unsuccessful ones of power which is too weak. Does my behavior in respect of love affect nothing? That is be¬ cause there is not enough love in me. Am I powerless
against the untruthfulness and the lies which have their being all around me? The reason is that I myself am not truthful enough. Have I to watch dislike and ill will carrying on their sad game? That means that I myself have not yet completely laid aside small-mindedness and envy. Is my love of peace misunderstood and scorned?
That means that I am not yet sufficiently peace-loving.

Los años arrugan la piel, pero renunciar al entusiasmo arruga el alma.