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One Does Not Ask Whether A Scientific Theory Is True, But Only Whether It Is Convenient.

Why Is It That Showers And Even Storms Seem To Come By Chance, So That Many People Think It Quite Natural To Pray For Rain Or Fine Weather, Though They Would Consider It Ridiculous To Ask For An Eclipse By Prayer.

Einstein Does Not Remain Attached To The Classical Principles, And When Presented With A Problem In Physics He Quickly Envisages All Of Its Possibilities. This Leads Immediately In His Mind To The Prediction Of New Phenomena Which May One Day Be Verified By Experiment.

Consider Now The Milky Way. Here Also We See An Innumerable Dust, Only The Grains Of This Dust Are No Longer Atoms But Stars; These Grains Also Move With Great Velocities, They Act At A Distance One Upon Another, But This Action Is So Slight At Great Distances That Their Trajectories Are Rectilineal; Nevertheless, From Time To Time, Two Of Them May Come Near Enough Together To Be Deviated From Their Course, Like A Comet That Passed Too Close To Jupiter. In A Word, In The Eyes Of A Giant, To Whom Our Suns Were What Our Atoms Are To Us, The Milky Way Would Only Look Like A Bubble Of Gas.

All Great Progress Takes Place When Two Sciences Come Together, And When Their Resemblance Proclaims Itself, Despite The Apparent Disparity Of Their Substance.