Comentarios de la gente - Escribir un comentario
No encontramos ningún comentario en los lugares habituales.
Otras ediciones - Ver todas
according activity adapt animals appear APPENDIX assume become believe birds body brain called cause cell centre cerebral hemispheres changes communication conceive connection consciousness Darwin definite described desire direction division effect efforts eggs evidence existence experience explain extended fact feeling followed force functions ganglia ganglion higher idea individual instinct intelligence kind knowledge laws less living maintain manner material matter means mechanism memory mental mental action mind modifications motion move movements natural selection necessary nerve nerve cells nervous never object observed operation organism origin perform personalities phenomena physical physical laws possess present preserved produce profitable prove psychical question reason referred reflex action relation response result says sensation sense single soul species stimulus structure substance supposed term theory thought tion tissue unconscious units UNIVERSITY variations various whole
Página 231 - It is more conformable to the ordinary wisdom of nature to secure so necessary an act of the mind, by some instinct or mechanical tendency, which may be infallible in its operations...
Página 155 - If it could be proved that any part of the structure of any one species had been formed for the exclusive good of another species, it would annihilate my theory, for such could not have been produced through natural selection.
Página 119 - It may metaphorically be said that natural selection is daily and hourly scrutinising, throughout the world, the slightest variations; rejecting those that are bad, preserving and adding up all that are good; silently and insensibly working, whenever and wherever opportunity offers, at the improvement of each organic being in relation to its organic and inorganic conditions of life.
Página 196 - The minutest incidents of childhood, or forgotten scenes of later years, were often revived : I could not be said to recollect them ; for if I had been told of them when waking, I should not have been able to acknowledge them as parts of my past experience. But placed as they were before me, in dreams like intuitions, and clothed in all their evanescent circumstances and accompanying feelings, I recognised them instantaneously.
Página 85 - ... still a change in the region of the extended. The only adequate expression is a CHANGE OF STATE : a change from the state of the extended cognition to a state of unextended cognition. By various theologians, heaven has been spoken of as not a place, but a state ; and this is the only phrase that I can find suitable to describe the vast, though familiar and easy, transition from the material or extended, to the 'immaterial or unextended side of our being.
Página 231 - As nature has taught us the use of our limbs, without giving us the knowledge of the muscles and nerves, by which they are actuated; so has she implanted in us an instinct, which carries forward the thought in a correspondent course to that which she has established among external objects; though we are ignorant of those powers and forces, on which this regular course and succession of objects totally depends.
Página 213 - I cannot compare the soul more properly to any thing than to a republic or commonwealth in which the several members are united by the reciprocal ties of government and subordination, and give rise to other persons, who propagate the same republic in the incessant changes of its parts.
Página 118 - Several writers have misapprehended or objected to the term Natural Selection. Some have even imagined that natural selection induces variability, whereas it implies only the preservation of such variations as arise and are beneficial to the being under its conditions of life.