To Invent Is To Discern, To Choose.

It May Happen That Small Differences In The Initial Conditions Produce Very Great Ones In The Final Phenomena. A Small Error In The Former Will Produce An Enormous Error In The Later. Prediction Becomes Impossible, And We Have The Fortuitous Phenomena.

Thought Must Never Submit, Neither To A Dogma, Nor To A Party, Nor To A Passion, Nor To An Interest, Nor To A Preconceived Idea, Nor To Whatever It May Be, Save To The Facts Themselves, Because, For Thought, Submission Would Mean Ceasing To Be.

Later Generations Will Regard Mengenlehre (set Theory) As A Disease From Which One Has Recovered.

It Is Far Better To Foresee Even Without Certainty Than Not To Foresee At All.

In The Old Days When People Invented A New Function They Had Something Useful In Mind.