Substances Known Quotes

3 quotes by 3 authors

• Marijuana is one of the safest, therapeutically active substances known to man. — Frances M. Young
• The most callous, stupid things were done just because regulations required them...It was not until 1983, for example, that U.S. federal agencies stated that substances… — Peter Singer
• The demonstration that no possible combination of known substances, known forms of machinery and known forms of force, can be united in a practical machine… — Simon Newcomb

Who Wrote These Substances Known Quotes

3 authors contributed a total of 3 Substances Known Quotes as follows:

• 1 Substances Known Quote by Frances M. Young
• 1 Substances Known Quote by Peter Singer
• 1 Substances Known Quote by Simon Newcomb