Idiom:
Lower your sights ( lower your individual taste )

Hit the book:
It is very simple. The 'working psychology' of the corporate is highly hierarchy oriented and hierarchy dominated. Intelligence, great knowledge, mentoring, guiding ability and uncommon thinking are assumed to be the birth right and capability of the top management and the people below them are largely considered as lesser intelligent.
Any extraordinary intelligence if the people at the lower levels display, such acts are largely criticized as arrogant act as superiors are only capable of being intelligent in the corporate. Such culture is more rampant in single man dominant corporate.