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Grandeur of character lies wholly in force of soul, that is, in the force of thought, moral principle, and love, and this may be found in the humblest condition of life

Uncertainty is the worst of all evils until the moment when reality makes us regret uncertainty

The deepest principle in human nature is the craving to be appreciated.

If we take science as our sole guide, if we accept and hold fast that alone which is verifiable, the old theology must go

Just as we outgrow a pair of trousers, we outgrow acquaintances, libraries, principles, etc., at times before they're worn out and times - and this is the worst of all - before we have new ones

I shall argue that strong men, conversely, know when to compromise and that all principles can be compromised to serve a greater principle