The extent of the region of the uncertain, the number of the problems the investigation of which ends in a verdict of not proven, will vary according… - Thomas Henry Huxley

Of moral purpose I see no trace in Nature. That is an article of exclusively human manufacture and very much to our credit.

In a well worn metaphor, a parallel is drawn between the life of man and the metamorphosis of the caterpillar into the butterfly; but the comparison may be more just as well as more novel, if for its former term we take the mental progress of the race. History shows that the human mind, fed by constant accessions of knowledge, periodically grows too large for its theoretical coverings, and bursts them asunder to appear in new habiliments, as the feeding and growing grub, at intervals, casts its too narrow skin and assumes another, itself but temporary. Truly the imago state of Man seems to be terribly distant, but every moult is a step gained, and of such there have been many.

The foundation of morality to have done, once and for all, with lying.