Who said .."Until you spread your wings, you'll have no idea how far you can fly." ???

Question

Does anyone know or is it just unknown?

Answer 1

I don't know but maybe they read,

PAPER 92 - THE LATER EVOLUTION OF RELIGION

P.1002 - §1 But real praying does attain reality. Even when the air currents are ascending, no bird can soar except by outstretched wings. Prayer elevates man because it is a technique of progressing by the utilization of the ascending spiritual currents of the universe.

Answer 2

I saw it on one of those motivational posters they hang in school hallways once, so my guess is that it's unknown or just a saying like "don't put all your eggs in one basket."

Answer 3

Buddy Holly?