That lowliness is young ambition's ladder,
Whereto the climber-upward turns his face;
But when he once attains the upmost round,
He then unto the ladder turns his back,
Looks in the clouds, scorning the base degrees
By which he did ascend.
Source: Julius Caesar, II. i. (22).
-- William Shakespeare, (Apr 23 1564-1616), English dramatist, poet; He is considered the greatest writer in any language for his 154 sonnets and 37 plays, e.g., Hamlet, 1600.