Each organic being is striving to increase in a geometrical ratio . . . each at some period of its life, during some season of the year, during each generation or at intervals, has to struggle for life and to suffer great destruction . . . The vigorous, the healthy, and the happy survive and multiply.

Thomson's views on the recent age of the world have been for some time one of my sorest troubles.

Not one change of species into another is on record ... we cannot prove that a single species has been changed.

There is no fundamental difference between man and animals in their ability to feel pleasure and pain, happiness, and misery.

Farewell Australia! You ... are too great and ambitious for affection, yet not great enough for respect. I leave your shores without sorrow or regret.

To 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."—Bacon: "Advancement of Learning".

The young blush much more freely than the old but not during infancy, which is remarkable, as we know that infants at a very early age redden from passion.