All Men By Nature Desire Knowledge.

If The Art Of Ship-building Were In The Wood, Ships Would Exist By Nature.

The Shape Of The Heaven Is Of Necessity Spherical; For That Is The Shape Most Appropriate To Its Substance And Also By Nature Primary.

The Soul Is The Cause Or Source Of The Living Body. The Terms Cause And Source Have Many Senses. But The Soul Is The Cause Of Its Body Alike In All Three Senses Which We Explicitly Recognize. It Is (a) The Source Or Origin Of Movement, It Is (b) The End, It Is (c) The Essence Of The Whole Living Body.

Bashfulness Is An Ornament To Youth, But A Reproach To Old Age.

The Business Of Every Art Is To Bring Something Into Existence, And The Practice Of An Art Involves The Study Of How To Bring Into Existence Something Which Is Capable Of Having Such An Existence And Has Its Efficient Cause In The Maker And Not In Itself.