Short-term gains in forestry often lead to long-term pains.

The present state of the system of nature is evidently a consequence of what it was in the preceding moment, and if we conceive of an intelligence which at a given instant comprehends all the relations of the entities of this universe, it could state the respective positions, motions, and general effects of all these entities at any time in the past or future.

The most important thing in mathematics is to ask the right questions.

The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion.

"We are all detectives in our own lives, trying to piece together the fragments of our past to understand who we are."