Today's Chinese proverb is actually more of an idiom. However seen as I seem to be spending increasing amounts of my time marketing on projects recently this one seems very appropriate for me at the moment. As most of the time I spend trying to make other people becoming advocates, this is a phrase I would be using quite often.
When you break these characters down its meaning is very clear. To devolop and to promote (making something bigger).
fā yáng guāng dà
Incidently I have learnt the last two of these characters with Heisig, which means 光 ray (of light) and 大 big.