When the last tree is cut, the last fish is caught, and the last river is polluted; when to breathe the air is sickening, you will realize, too late, that wealth is not in bank accounts and that you can't eat money.
It was one of those hot, silent nights, when people sit at windows listening for the thunder which they know will shortly break; when they recall dismal tales of hurricanes and earthquakes; and of lonely travellers on open plains, and lonely ships at sea, struck by lightning.
Human reason has this peculiar fate that in one species of its knowledge it is burdened by questions which, as prescribed by the very nature of reason itself, it is not able to ignore, but which, as transcending all its powers, it is also not able to answer.
Man, being the servant and interpreter of Nature, can do and understand so much and so much only as he has observed in fact or thought of the course of nature; beyond this he neither knows anything nor can do anything.
MIND, n. A mysterious form of matter secreted by the brain. Its chief activity consists in the endeavour to ascertain its own nature, the futility of the attempt being due to the fact that it has nothing but itself to know itself with.
The eye of understanding is like the eye of the sense; for as you may see great objects through small crannies or levels, so you may see great axioms of nature through small and contemptible instances.
If Natur has gifted a man with powers of argeyment, a man has a right to make the best of 'em, and has not a right to stand on false delicacy, and deny that he is so gifted; for that is a turning of his back on Natur, a flouting of her, a slighting of her precious caskets, and a proving of one's self to be a swine that isn't worth her scattering pearls before.