"And though I cannot conceive how any person can shut his eyes to the general state of misery throughout the universe, I still think that it is for a wise purpose; that the evils of life, which could not properly be otherwise, will in the course of time be rectified, and the exquisite pleasures for which we are formed will be enjoyed in our progeny: also that we may ourselves become the inhabitants of the improved world, or of some other world improved in a like manner; and that even if the different species of all the present animals should become extinct, as indicated by what we have observed of the different bones in the several strata, the discoveries of the present time may enrich the future, unless every trace of them should be destroyed at once."