“We must be more and more to each other, my dear wife.' -Charles Darwin to wife Emma upon loss of daughter Annie”

“We shall me much less miserable together.' -Emma Darwin to husband Charles upon grief for loss of daughter Annie”

“You must remember that you are my prime treasure (and always have been).'Emma Darwin to husband Charles”

“I have ceased to think even of barnacles!' -Charles Darwin”

“It is feeling and not reasoning that drives one to prayer.' -Emma to Charles”

“I wish you knew how I value you; and what an inexpressible blessing it is to have one whom one can always trust, one always the same, always ready to give comfort, sympathy and the best advice. God bless you, my dear, you are too good for me.' -Charles to Emma, 1859”

“My heart has often been too full to speak.' -Emma to husband Charles on her gratitude for 'the cheerful and affectionate looks you have given me when I know you have been miserably uncomfortable.”