Boasts Are Wind And Deeds Are Hard.

All The Hundreds Of Millions Of People Who, In Their Time, Believed The Earth Was Flat Never Succeeded In Unrounding It By An Inch.

There Is A Single Light Of Science, And To Brighten It Anywhere Is To Brighten It Everywhere.

The Temptation Was Great To Muster What Force We Could And Put Up A Fight. It's The Easiest Way Out, And The Most Satisfactory To Self-respect--but, Nearly Invariably, The Stupidest.

It Seems To Me That God Is A Convenient Invention Of The Human Mind

I Have Never Written A Book That Didn't Teach Me Far More Than It Taught My Reader.