As a natural process, of the same character as the development of a tree from its seed, or of a fowl from its egg, evolution excludes creation and all other kinds of supernatural intervention.
Thomas HuxleyI conceive that the leading characteristic of the nineteenth century has been the rapid growth of the scientific spirit, the consequent application of scientific methods of investigation to all the problems with which the human mind is occupied, and the correlative rejection of traditional beliefs which have proved their incompetence to bear such investigation.
Thomas HuxleyOnly one absolute certainty is possible to man, namely that at any given moment the feeling which he has exists.
Thomas HuxleyFriendship involves many things but, above all the power of going outside oneself and appreciating what is noble and loving in another.
Thomas HuxleySocial progress means a checking of the cosmic process at every step and the substitution for it of another, which may be called the ethical process; the end of which is not the survival of those who may happen to be the fittest, in respect of the whole of the conditions which obtain, but of those who are ethically the best.
Thomas Huxley