" you never know how the substance itself will affect you.
"Parents don't think their kids are doing it, and both parents and kids don't know how dangerous these substances are.
Antony's speeches are so famous – you know how many actors of substance have done them, and done them incredibly well.
Philosophers nowadays will want to know how this account of substance places Aquinas on the question of the relation of body and soul with respect to Dualism and Physicalism.
She said they didn't know how much of the substance they were dealing with, or how widespread it could be on New Zealand's drug market.
"And they said, good, because marijuana today is such a complex compound, we don't really know what's in it, we don't really know how it interacts with other substances or other medicines," she continued.
They are powerful as individuals, but as a duo on stage and in life, they are a beacon of substance who know how to engage people and organizations with their knowledge and charm.
Although it is widely agreed on among scientists that the world in its essentials is held together by fundamental physical laws and although, from a physics perspective, the fundamental material properties are astonishingly well known today, we still seek out for chemists when we want to know how to oxidize a given substance and we still consult a physician when we are sick.
When using black lights to illuminate substances, whether it's for forensic purposes or to detect leaks in heating and cooling or other systems, you'll need to know how much of a given substance will show up well under a black light.
"The truth is we simply do not know how much PIB and other similar substances are released into the marine environment and what the wider impacts are on marine ecosystems, including seabirds.
