As great oak trees grow from tiny acorns, so many great people or things grew from a small and unimportant beginning, so be patient. - A proverb. * /Many great men were once poor, unimportant boys. Great oaks from little acorns grow./
GREAT OAKS FROM LITTLE ACORNS GROW
Meaning of GREAT OAKS FROM LITTLE ACORNS GROW in English
Slang English vocab. Английский сленговый словарь. 2012