Explain the proverbs: a) half a loaf is better than no bread. b) tastes differ.

a) it means that getting just a part of what you want is better than nothing. 

b) this proverb means that people have different tastes, ideas, thoughts, preferences.

Объясните пословицы:
a) Половина хлеба не лучше, чем никакой хлеб.
b) Вкусы отличаются.