Akademik

Одна голова хорошо, а две лучше

Two people co-operating are more efficient than one. See Ум - хорошо, а два - лучше (У)

Var.: Один ум хорошо, а два - лучше

Cf: Four eyes are better (see more) than two (Am., Br.). Many heads are better than one (Br.). Many wits are better than one (Br.). Two heads are better than one (Am., Br.). Two minds are better than one (Am.)

Русско-английский словарь пословиц и поговорок. Академик.ру. 2013.