If I had my life to live over again, I would have made a rule to read some poetry and listen to some music at least once every week.

A man who dares to waste one hour of time has not discovered the value of life.

It is not the strongest of the species that survives,not the most intelligent that survives.It is the one that is the most adaptable to change.

The natural history of this archipelago is very remarkable; it seems to be a little world within itself.

There is grandeur in this view of life, with its several powers, having been originally breathed by the Creator into a few forms or into one; and that, whilst this planet has gone cycling on according to the fixed law of gravity, from so simple a beginning endless forms most beautiful and most wonderful have been and are being evolved.

As many more individuals of each species are born than can possibly survive; and as, consequently, there is a frequently recurring struggle for existence, it follows that any being, if it vary however slightly in any manner profitable to itself, under the complex and sometimes varying conditions of life, will have a better chance of surviving, and thus be naturally selected. From the strong principle of inheritance, any selected variety will tend to propagate its new and modified form.

A grand and almost untrodden field of inquiry will be opened, on the causes and laws of variation, on correlation of growth, on the effects of use and disuse, on the direct actions of external conditions, and so forth.

All that at present can be said with certainty, is that, as with the individual, so with the species, the hour of life has run its course, ans is spent.

The love for all living creatures is the most noble attribute of man.