dwarf standing on the shoulders of giants

broad shoulders

the ability to take criticism, or accept responsibility.

good head on one's shoulders

intelligent or shrewd; have good sense or judgement

head and shoulders

To a considerable degree.

mistake windmills for giants

To perceive ordinary, nonthreatening objects or situations as significant dangers or adversaries, often due to an overly romantic, idealistic, or deluded worldview.

old head on young shoulders

Alternative form of good head on one's shoulders.

rub shoulders

To associate closely; to socialize or mingle.

stand on someone's shoulders

To build on the previous discoveries or creativity of someone.

stand on the shoulders of

To build on the previous works and gains of.