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Every chemical substance, whether natural or artificial, falls into one of two major categories, according to the spatial characteristic of its form. The distinction is between those substances that have a plane of symmetry and those that do not. The former belong to the mineral, the latter to the living world.

— Louis Pasteur

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Science

More quotes by Louis Pasteur

I am on the edge of mysteries and the veil is getting thinner and thinner.

In the fields of observation chance favors only the prepared mind.

In the fields of observation chance favours only the prepared mind.

A bottle of wine contains more philosophy than all the books in the world.

In the field of observation, chance favours only the prepared mind.

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Attribution

Quote text and notes from Wikiquote: Louis Pasteur (page history), available under CC BY-SA 4.0. Source quality and labels are our own summary of what Wikiquote records.