The only conclusive evidence of a man's sincerity is that he gives himself for a principle. Words, money, all things else, are comparatively easy to give away; but when a man makes a gift of his daily life and practice, it is plain that the truth, whatever it may be, has taken possession of him.
Sincerity is impossible, unless it pervade the whole being, and the pretence of it saps the very foundation of character.
Among the lessons taught by the French revolution, there is none sadder or more striking than this--that you may make everything else out of the passions of men except a political system that will work, and that there is nothing so pitilessly and unconsciously cruel as sincerity formulated into dogma.
No man can produce great things who is not thoroughly sincere in dealing with himself, who would not exchange the finest show for the poorest reality, who does not so love his work that he is not only glad to give himself for it, but finds rather a gain than a sacrifice in the surrender.
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