We can set our deeds to the music of a grateful heart, and seek to round our lives into a hymn — the melody of which will be recognized by all who come in contact with us, and the power of which shall not be evanescent, like the voice of the singer, but perennial, like the music of the spheres.
Charles Darwin
But just in proportion as this process of extermination has acted on an enormous scale, so must the number of intermediate varieties, which have formerly existed, be truly enormous. Why then is not every geological formation and every stratum full of such intermediate links? Geology assuredly does not reveal any such finely graduated organic chain; and this, perhaps, is the most obvious and serious objection which can be urged against the theory. The explanation lies, as I believe, in the extreme imperfection of the geological record.
