It Is Always Advisable To Perceive Clearly

After My Return To England It Appeared To Me That By Following The Example Of Lyell In Geology, And By Collecting All Facts Which Bore In Any Way On The Variation Of Animals And Plants Under Domestication And Nature, Some Light Might Perhaps Be Thrown On The Whole Subject.

In My Simplicity, I Remember Wondering Why Every Gentleman Did Not Become An Ornithologist.

I Trust And Believe That The Time Spent In This Voyage ... Will Produce Its Full Worth In Natural History; And It Appears To Me The Doing What Little We Can To Increase The General Stock Of Knowledge Is As Respectable An Object Of Life, As One Can In Any Likelihood Pursue.

There Is No Fundamental Difference Between Humans And The Higher Mammalsin Their Mental Faculties

It Is A Truly Wonderful Fact - The Wonder Of Which We Are Apt To Overlook From Familiarity - That All Animals And All Plants Throughout All Time And Space Should Be Related To Each Other In Group Subordinate To Group.