There is no fundamental difference between man and animals in their ability to feel pleasure and pain, happiness, and misery.
Charles DarwinTo conclude, therefore, let no man out of a weak conceit of sobriety, or an ill-applied moderation, think or maintain, that a man can search too far or be too well studied in the book of God's word, or in the book of God's works; divinity or philosophy; but rather let men endeavour an endless progress or proficience in both."โBacon: "Advancement of Learning".
Charles DarwinThomson's views on the recent age of the world have been for some time one of my sorest troubles.
Charles DarwinSuch simple instincts as bees making a beehive could be sufficient to overthrow my whole theory.
Charles DarwinThere is grandeur in this view of life, with its several powers, having been originally breathed 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.
Charles Darwin