Nature Does Nothing In Vain,

If I Am To Constrain You By Any Law, It Must Be One By Which I Am Also Bound.

In The Metaphysical Elements Of Aesthetics The Various Nonmoral Feelings Are To Be Made Use Of; In The Elements Of Moral Metaphysics The Various Moral Feelings Of Men, According To The Differences In Sex, Age, Education, And Government, Of Races And Climates, Are To Be Employed.

Moral Teleology Supplies The Deficiency In Physical Teleology , And First Establishes A Theology ; Because The Latter, If It Did Not Borrow From The Former Without Being Observed, But Were To Proceed Consistently, Could Only Found A Demonology , Which Is Incapable Of Any Definite Concept.

[a Ruler Is Merely] The Trustee Of The Rights Of Other Men And He Must Always Stand In Dread Of Having In Some Way Violated These Rights.

I Assert That, In Any Particular Natural Science, One Encounters Genuine Scientific Substance Only To The Extent That Mathematics Is Present.