Hedge your bets
Hedging one’s bets is defined as being ‘to avoid committing oneself’, coincidentally the same as ‘sitting on the fence’!
The verb ‘to hedge’, which has been used in English since the 16th century, derives from the noun ‘hedge’. The first hedges were of spiny, impenetrable hawthorn. To ‘hedge’ a piece of land was to secure it and limit it in terms of size, and this gave rise to the meaning of ‘secure, limited risk’. Hedge funds take their name from limiting, or ‘hedging’ a risk.