Reserve your right to think, for even to think wrongly is better than not to think at all.
To teach superstitions as truth is a most terrible thing.
All formal dogmatic religions are fallacious and must never be accepted by self-respecting persons as final.
A very great deal more truth can become known than can be proven.
Let us not underrate the value of a fact; it will one day flower in a truth.
I do not feel obliged to believe that the same God who has endowed us with senses, reason, and intellect has intended us to forgo their use and by some other means to give us knowledge which we can attain by them.