The validity of all the Inductive Methods depends on the assumption that every event, or the beginning of every phenomenon, must have some cause; some antecedent, upon the existence of which it is invariably and unconditionally consequent.

The moment one asks himself whether he is happy, he ceases to be so.

Every established fact which is too bad to admit of any other defence is always presented to us as an injunction of religion.

With equality of experience and of general faculties, a woman usually sees much more than a man of what is immediately before her.

Unfortunately for the good sense of mankind, the fact of their fallibility is far from carrying the weight in their practical judgement, which is always allowed to it in theory; for while every one well knows himself to be fallible, few think it necessary to take any precautions against their own fallibility.

All silencing of discussion is an assumption of infallibility.

Human nature is not a machine to be built after a model, and set to do exactly the work prescribed for it, but a tree, which requires to grow and develop itself on all sides, according to the tendency of the inward forces which make it a living thing.