Louis Pasteur Quote

All things are hidden, obscure and debatable if the cause of the phenomena be unknown, but everything is clear if this cause be known.

The Harvard Classics (Volume 38), The Germ Theory and Its Application to Medicine and Surgery (p. 366) - P.F. Collier & Son. 1938

All things are hidden, obscure and debatable if the cause of the phenomena be unknown, but everything is clear if this cause be known.

All things are hidden, obscure and debatable if the cause of the phenomena be unknown, but everything is clear if this cause be known.

All things are hidden, obscure and debatable if the cause of the phenomena be unknown, but everything is clear if this cause be known.

All things are hidden, obscure and debatable if the cause of the phenomena be unknown, but everything is clear if this cause be known.