Nature will tell you a direct lie if she can.

The world will not be inherited by the strongest, it will be inherited by those most able to change.

The limit of man s knowledge in any subject possesses a high interest which is perhaps increased by its close neighbourhood to the realms of imagination.

Light will be thrown on the origin of man and his history.

Thus disbelief crept over me at a very slow rate, but at last was complete. The rate was so slow that I felt no distress, and have never since doubted even for a single second that my conclusion was correct.

Freedom of thought is best promoted by the gradual illumination of men’s minds which follows from the advance of science.

Thus we have given to man a pedigree of prodigious length, but not, it may be said, of noble quality.