Prayer does not use up artificial energy, doesn't burn up any fossil fuel, doesn't pollute. Neither does song, neither does love, neither does the dance.
— Margaret Mead

Hate pollutes the mind.
Unknown pollution quote

Unfortunately, our affluent society has also been an effluent society.
— Hubert Humphrey

No witchcraft, no enemy action had silenced the rebirth of new life in this stricken world. The people had done it themselves.
— Rachel Carson

The most important pathological effects of pollution are extremely delayed and indirect.
— pollution quotation by Ren