Knowing Thyself, That Is The Greatest Wisdom.

The Divine Intellect Indeed Knows Infinitely More Propositions [than We Can Ever Know]. But With Regard To Those Few Which The Human Intellect Does Understand, I Believe That Its Knowledge Equals The Divine In Objective Certainty.

It Was Granted To Me Alone To Discover All The New Phenomena In The Sky And Nothing To Anybody Else. This Is The Truth Which Neither Envy Nor Malice Can Supress.

If There Were As Great A Scarcity Of Soil As Of Jewels Or Precious Metals, There Would Not Be A Prince Who Would Not Spend A Bushel Of Diamonds And Rubies And A Cartload Of Gold Just To Have Enough Earth To Plant A Jasmine In A Little Pot, Or To Sow An Orange Seed And Watch It Sprout, Grow, And Produce Its Handsome Leaves, Its Fragrant Flowers, And Fine Fruit.

But, Because My Private Lectures And Domestic Pupils Are A Great Hinderance And Intteruption Of My Studies, I Wish To Live Entirely Exempt From The Former, And In Great Measure From The Latter. ... In Short, I Should Wish To Gain My Bread From My Writings.

They Who Depend Upon Manifest Observations Will Philosophize Better Than Those Who Persist In Opinions Repugnant To The Senses.