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 PasteurThese three things-work, will, success-fill human existences. Will opens the door to success, both brilliant and happy. Work passes these doors, and at the end of the journey success comes in to crown one's efforts.
Louis PasteurHow do you know that the incessant progress of science will not compel scientists to consider that life has existed during eternity, and not matter?
Louis PasteurThe grandeur of the acts of men are measured by the inspiration from which they spring.
Louis Pasteur