Killing yourself is a major commitment, it takes a kind of courage. Most people just lead lives of cowardly desperation. It's kinda half suicide where you just dull yourself with substances. Robert Crumb
The final result of our researches has widened the class of substances sensitive to light vibrations, until we can propound the fact of such sensitiveness being a general property of all matter. Alexander Graham Bell
Consumption is also immediately production, just as in nature the consumption of the elements and chemical substances is the production of the plant. Karl Marx
If the principle is, "Let's not get lethal substances out to the public", the first one you'd go after is tobacco. The next one you'd go after is alcohol. Way down the list you'd get to cocaine, and sort of invisibly low you'd get to marijuana. Noam Chomsky
Burning carbon-based substances like oil, gas, and especially coal, produces billions of tons of extra carbon dioxide each year. Methane gas from cows and pigs and other animals on our large farms ends up in the atmosphere as well, trapping more of the sun's energy as heat. Bill Nye
While the collateral consequences of drugs such as cocaine are indisputably severe, they are not unlike those which flow from the misuse of other, legal, substances. Byron White