Do Not Put Forward Anything That You

Analogy Cannot Serve As Proof.

Whatever Your Career May Be, Do Not Let Yourselves Become Tainted By A Deprecating And Barren Scepticism.

No, There Is Now No Circumstance Known In Which It Can Be Affirmed That Microscopic Beings Came Into The World Without Germs, Without Parents Similar To Themselves. Those Who Affirm It Have Been Duped By Illusions, By Ill-conducted Experiments, Spoilt By Errors That They Either Did Not Perceive Or Did Not Know How To Avoid.

Science Proceeds By Successive Answers To Questions More And More Subtle, Coming Nearer And Nearer To The Very Essence Of Phenomena.

Where Are The Real Sources Of Human Dignity, Freedom And Modern Democracy, If Not In The Concept Of Infinity To Which All Men Are Equal?