Nature is so delightful and abundant in its variations that among trees of the same kind there would not be found one which nearly resembles another, and not only the plants as a whole, but among their branches, leaves, and fruit, will not be found one which is precisely like another.

Many have made a trade of delusions and false miracles, deceiving the stupid multitudes.

He who does not understand the supreme certainty of mathematics is wallowing in confusion.

Let not your rage or malice destroy a life.

To such an extent does nature delight and abound in variety that among her trees there is not one plant to be found which is exactly like another; and not only among the plants, but among the boughs, the leaves and the fruits, you will not find one which is exactly similar to another.

What is fair in men, passes away, but not so in art

It vexes me greatly that having to earn my living has forced me to interrupt the work and to attend to small matters.