One Day When Thomas Aquinas Was Preaching

What Can Be Accomplished By A Few Principles Is Not Effected By Many. But It Seems That Everything We See In The World Can Be Accounted For By Other Principles, Supposing God Did Not Exist. For All Natural Things Can Be Reduced To One Principle, Which Is Nature, And All Voluntary Things Can Be Reduced To One Principle, Which Is Human Reason, Or Will. Therefore There Is No Need To Suppose God's Existence.

Man Can Sin Against Nature In Two Ways. First, When He Sins Against His Specific Rational Nature, Acting Contrary To Reason. In This Sense, We Can Say That Every Sin Is A Sin Against Man's Nature, Because It Is Against Man's Right Reason.

A Man Does Not Always Choose What His Guardian Angel Intends.

To Be United To God In Unity Of Person Was Not Fitting To Human Flesh, According To Its Natural Endowments, Since It Was Above His Dignity; Nevertheless, It Was Fitting That God, By Reason Of His Infinite Goodness, Should Unite It To Himself For Human Salvation.

Three Things Are Necessary For The Salvation Of Man: To Know What He Ought To Believe; To Know What He Ought To Desire; And To Know What He Ought To Do.