The Day Of Fortune Is Like A

If You Are To Accomplish All That One Demands Of You, You Must Overestimate Your Own Worth.

There Is No Permanence In Doubt; It Incites The Mind To Closer Inquiry And Experiment, From Which, If Rightly Managed, Certainty Proceeds, And In This Alone Can Man Find Thorough Satisfaction.

The First And Last Thing Required Of Genius Is The Love Of Truth. [ger., Das Erste Und Letzte, Was Vom Genie Gefordert Wird, Ist Wahreits-liebe.]

Life Belongs To The Living, And He Who Lives Must Be Prepared For Changes.

Hypotheses Are Only The Pieces Of Scaffolding Which Are Erected Round A Building During The Course Of Construction, And Which Are Taken Away As Soon As The Edifice Is Completed.