In order to shake a hypothesis, it is sometimes not necessary to do anything more than push it as far as it will go. – Denis Diderot
Power acquired by violence is only a usurpation, and lasts only as long as the force of him who commands prevails over that of those who obey. – Denis Diderot
Genius is present in every age, but the men carrying it within them remain benumbed unless extraordinary events occur to heat up and melt the mass so that it flows forth. – Denis Diderot
The world can doubtless never be well known by theory: practice is absolutely necessary; but surely it is of great use to a young man, before he sets out for that country, full of mazes, windings, and turnings, to have at least a general map of it, made by some experienced traveler. – Lord Chesterfield