The only reward of virtue is virtue.
When nature has work to be done, she creates a genius to do it.
Every man alone is sincere. At the entrance of a second person, hypocrisy begins
Invention breeds invention. No sooner is the electric telegraph devised than gutta-percha, the very material it requires, is found. The aeronaut is provided with gun-cotton, the very fuel he wants for his balloon.
Genius appeals to the future.
Live in the fields, and God will give you lectures on natural philosophy every day.