Alfred Russel Wallace

"In my solitude I have pondered much on the incomprehensible subjects of space, eternity, life and death."

"If this is not done, future ages will certainly look back upon us as a people so immersed in the pursuit of wealth as to be blind to higher considerations."

"What we need are not prohibitory marriage laws, but a reformed society, an educated public opinion which will teach individual duty in these matters."

"Civilisation has ever accompanied emigration and conquest - the conflict of opinion, of religion, or of race."

"I am thankful I can see much to admire in all religions."