Nothing but heaven is impregnable to vice.

Immediate necessity makes many things convenient, which if continued would grow into oppressions.

The story of Jesus Christ appearing after he was dead is the story of an apparition, such as timid imaginations can always create in vision, and credulity believe. Stories of this kind had been told of the assassination of Julius Caesar.

Take away from Genesis the belief that Moses was the author, on which only the strange believe that it is the word of God has stood, and there remains nothing of Genesis but an anonymous book of stories, fables, and traditionary or invented absurdities, or of downright lies.

The mere man of pleasure is miserable in old age, and the mere drudge in business is but little better, whereas, natural philosophy, mathematical and mechanical science, are a continual source of tranquil pleasure, and in spite of the gloomy dogmas of priests and of superstition, the study of these things is the true theology; it teaches man to know and admire the Creator, for the principles of science are in the creation, and are unchangeable and of divine origin.

Where there are no distinctions there can be no superiority; perfect equality affords no temptation.

The Almighty Lecturer, by displaying the principles of science in the structure of the universe, has invited man to study and to imitation. It is as if He has said to the inhabitants of this globe that we call ours, "I have made an earth for man to dwell upon, and I have rendered the starry heavens visible, to teach him science and the arts. He can now provide for his own comfort, and learn from my munificence to all to be kind to each other.